{"id":9190,"date":"2023-12-15T09:59:10","date_gmt":"2023-12-15T06:59:10","guid":{"rendered":"https:\/\/urbancare.clinic\/many-mothers-and-their-children-share-same-birthday-month-heres-why\/"},"modified":"2023-12-15T09:59:10","modified_gmt":"2023-12-15T06:59:10","slug":"de-nombreuses-meres-et-leurs-enfants-partagent-le-meme-mois-danniversaire-voici-pourquoi","status":"publish","type":"post","link":"https:\/\/urbancare.clinic\/fr\/many-mothers-and-their-children-share-same-birthday-month-heres-why\/","title":{"rendered":"De nombreuses m\u00e8res et leurs enfants partagent le m\u00eame mois d\u2019anniversaire\u00a0; Voici pourquoi"},"content":{"rendered":"<div><img decoding=\"async\" src=\"https:\/\/urbancare.clinic\/wp-content\/uploads\/2023\/12\/many-mothers-and-their-children-share-same-birthday-month-heres-why.jpg\" class=\"ff-og-image-inserted\" style=\"display:none\"><\/div>\n<p>Partagez-vous votre mois d&#039;anniversaire avec votre maman ou votre enfant ? Il s&#039;agit d&#039;un ph\u00e9nom\u00e8ne \u00e9tonnamment courant, selon une nouvelle \u00e9tude r\u00e9cente qui a r\u00e9v\u00e9l\u00e9 des tendances dans la saisonnalit\u00e9 des naissances humaines. Il s\u2019av\u00e8re que les femmes sont plus susceptibles d\u2019avoir des enfants le m\u00eame mois que leur naissance, et les naissances au sein de la famille imm\u00e9diate ont tendance \u00e0 se regrouper au cours d\u2019un mois donn\u00e9.<\/p>\n<p>Les chercheurs ont fait ces d\u00e9couvertes apr\u00e8s avoir \u00e9valu\u00e9 les donn\u00e9es de plus de 10 millions d\u2019accouchements en France et en Espagne \u2013 toutes les naissances de 1980 \u00e0 1983 et de 2016 \u00e0 2019 en Espagne, et toutes les naissances de 2000 \u00e0 2003 et de 2010 \u00e0 2013 en France. Les r\u00e9sultats ont \u00e9t\u00e9 publi\u00e9s dans le <a rel=\"noopener nofollow\" href=\"https:\/\/www.tandfonline.com\/doi\/full\/10.1080\/00324728.2023.2272983\" target=\"_blank\">journal<\/a> \u00c9tudes d\u00e9mographiques.<\/p>\n<p>\u00ab Nos r\u00e9sultats ont montr\u00e9 l&#039;existence d&#039;une similarit\u00e9 non seulement entre les saisons de naissance des parents et des enfants, mais \u00e9galement entre les saisons de naissance des deux parents et entre les saisons de naissance des fr\u00e8res et s\u0153urs adjacents ; cela explique en partie la stabilit\u00e9 des tendances saisonni\u00e8res au fil du temps \u00bb, ont \u00e9crit les chercheurs.<\/p>\n<p>Ils ont observ\u00e9 que les naissances dans un pays particulier ont tendance \u00e0 suivre un mod\u00e8le selon lequel certaines p\u00e9riodes de l\u2019ann\u00e9e enregistrent plus de naissances que d\u2019autres. Cette variation saisonni\u00e8re du taux de natalit\u00e9 humaine est connue sous le nom de saisonnalit\u00e9 des naissances.<\/p>\n<p>Cependant, lorsque les donn\u00e9es sur les naissances ont \u00e9t\u00e9 regroup\u00e9es en fonction du mois de naissance des m\u00e8res, les chercheurs n\u2019ont pas constat\u00e9 la tendance attendue. Au lieu de cela, il y a eu une augmentation des naissances en janvier parmi le groupe de m\u00e8res n\u00e9es en janvier et ainsi de suite. Il y a eu 4,6% de naissances de plus que pr\u00e9vu, au cours desquelles la m\u00e8re et l&#039;enfant partageaient le m\u00eame mois de naissance. Le r\u00e9sultat \u00e9tait coh\u00e9rent dans les deux pays et dans les quatre p\u00e9riodes examin\u00e9es pour l\u2019\u00e9tude.<\/p>\n<p>&quot;C&#039;\u00e9tait \u00e9galement le cas pour les fr\u00e8res et s\u0153urs (il y avait 12,1% de naissances de plus que pr\u00e9vu lorsque des fr\u00e8res et s\u0153urs adjacents avaient le m\u00eame mois de naissance), les parents avec le m\u00eame mois de naissance (4,4% de plus de naissances) et lorsqu&#039;un enfant avait le m\u00eame mois de naissance mois comme leur p\u00e8re (2% naissances de plus) \u00bb, ont d\u00e9clar\u00e9 les chercheurs dans un communiqu\u00e9. <a rel=\"noopener nofollow\" href=\"https:\/\/www.eurekalert.org\/news-releases\/1008752\" target=\"_blank\">communiqu\u00e9 de presse<\/a>.<\/p>\n<p>L&#039;\u00e9quipe attribue le ph\u00e9nom\u00e8ne aux caract\u00e9ristiques sociod\u00e9mographiques partag\u00e9es des membres de la famille. Des facteurs tels que la disponibilit\u00e9 de nourriture et l&#039;exposition au soleil affectent la fertilit\u00e9 d&#039;une personne. Les personnes issues de milieux similaires forment des couples et sont plus susceptibles d&#039;accoucher \u00e0 certaines p\u00e9riodes de l&#039;ann\u00e9e, ont expliqu\u00e9 les chercheurs.<\/p>\n<p>\u00ab Qu\u2019est-ce qui pourrait expliquer les probabilit\u00e9s plus \u00e9lev\u00e9es que des membres de la famille naissent au cours de la m\u00eame saison ? Les explications potentielles semblent \u00eatre \u00e0 la fois sociales et biologiques \u00bb, a d\u00e9clar\u00e9 l&#039;auteur de l&#039;\u00e9tude Adela Recio Alcaide, \u00e9pid\u00e9miologiste \u00e0 l&#039;Universit\u00e9 d&#039;Alcala.<\/p>\n<p>\u00ab Nous discutons de la tendance des membres d\u2019une famille \u00e0 na\u00eetre au cours de la m\u00eame saison comme le r\u00e9sultat de deux faits : premi\u00e8rement, les diff\u00e9rents groupes sociod\u00e9mographiques pr\u00e9sentent des sch\u00e9mas de naissance diff\u00e9renci\u00e9s et, deuxi\u00e8mement, les membres de la famille partagent des caract\u00e9ristiques sociod\u00e9mographiques. Enfin, nous concluons que la saison des naissances est li\u00e9e aux caract\u00e9ristiques familiales et que celles-ci doivent \u00eatre prises en compte lors de l\u2019\u00e9valuation des effets du mois de naissance sur les r\u00e9sultats sociaux\/sanitaires ult\u00e9rieurs \u00bb, ont not\u00e9 les chercheurs.<\/p>\n<p>Une limite de l&#039;\u00e9tude est que l&#039;analyse suppose une \u00ab ind\u00e9pendance des r\u00e9sultats \u00bb, mais les chercheurs mettent en garde contre l&#039;existence d&#039;une \u00ab d\u00e9pendance des r\u00e9sultats au sein des familles \u00bb, qui aurait pu affecter les r\u00e9sultats. Cependant, lorsque l\u2019\u00e9quipe a r\u00e9p\u00e9t\u00e9 l\u2019analyse apr\u00e8s ajustement pour ce facteur, les r\u00e9sultats \u00e9taient tr\u00e8s similaires.<\/p>\n<p><a href=\"https:\/\/www.medicaldaily.com\/many-mothers-their-children-share-same-birthday-month-heres-why-471195\">Source quotidienne m\u00e9dicale<\/a><\/p>\n<p>","protected":false},"excerpt":{"rendered":"<div><img decoding=\"async\" src=\"https:\/\/urbancare.clinic\/wp-content\/uploads\/2023\/12\/many-mothers-and-their-children-share-same-birthday-month-heres-why.jpg\" class=\"ff-og-image-inserted\"><\/div>\n<p>Partagez-vous votre mois d&#039;anniversaire avec votre maman ou votre enfant ? Il s&#039;agit d&#039;un ph\u00e9nom\u00e8ne \u00e9tonnamment courant, selon une nouvelle \u00e9tude r\u00e9cente qui a r\u00e9v\u00e9l\u00e9 des tendances dans la saisonnalit\u00e9 des naissances humaines. Il s\u2019av\u00e8re que les femmes sont plus susceptibles d\u2019avoir des enfants le m\u00eame mois que leur naissance, et les naissances au sein de la famille imm\u00e9diate ont tendance \u00e0 se regrouper au cours d\u2019un mois donn\u00e9.<\/p>\n<p>Les chercheurs ont fait ces d\u00e9couvertes apr\u00e8s avoir \u00e9valu\u00e9 les donn\u00e9es de plus de 10 millions d\u2019accouchements en France et en Espagne \u2013 toutes les naissances de 1980 \u00e0 1983 et de 2016 \u00e0 2019 en Espagne, et toutes les naissances de 2000 \u00e0 2003 et de 2010 \u00e0 2013 en France. Les r\u00e9sultats ont \u00e9t\u00e9 publi\u00e9s dans le <a rel=\"noopener nofollow\" href=\"https:\/\/www.tandfonline.com\/doi\/full\/10.1080\/00324728.2023.2272983\" target=\"_blank\">journal<\/a> \u00c9tudes d\u00e9mographiques.<\/p>\n<p>\u00ab Nos r\u00e9sultats ont montr\u00e9 l&#039;existence d&#039;une similarit\u00e9 non seulement entre les saisons de naissance des parents et des enfants, mais \u00e9galement entre les saisons de naissance des deux parents et entre les saisons de naissance des fr\u00e8res et s\u0153urs adjacents ; cela explique en partie la stabilit\u00e9 des tendances saisonni\u00e8res au fil du temps \u00bb, ont \u00e9crit les chercheurs.<\/p>\n<p>Ils ont observ\u00e9 que les naissances dans un pays particulier ont tendance \u00e0 suivre un mod\u00e8le selon lequel certaines p\u00e9riodes de l\u2019ann\u00e9e enregistrent plus de naissances que d\u2019autres. Cette variation saisonni\u00e8re du taux de natalit\u00e9 humaine est connue sous le nom de saisonnalit\u00e9 des naissances.<\/p>\n<p>Cependant, lorsque les donn\u00e9es sur les naissances ont \u00e9t\u00e9 regroup\u00e9es en fonction du mois de naissance des m\u00e8res, les chercheurs n\u2019ont pas constat\u00e9 la tendance attendue. Au lieu de cela, il y a eu une augmentation des naissances en janvier parmi le groupe de m\u00e8res n\u00e9es en janvier et ainsi de suite. Il y a eu 4,6% de naissances de plus que pr\u00e9vu, au cours desquelles la m\u00e8re et l&#039;enfant partageaient le m\u00eame mois de naissance. Le r\u00e9sultat \u00e9tait coh\u00e9rent dans les deux pays et dans les quatre p\u00e9riodes examin\u00e9es pour l\u2019\u00e9tude.<\/p>\n<p>&quot;C&#039;\u00e9tait \u00e9galement le cas pour les fr\u00e8res et s\u0153urs (il y avait 12,1% de naissances de plus que pr\u00e9vu lorsque des fr\u00e8res et s\u0153urs adjacents avaient le m\u00eame mois de naissance), les parents avec le m\u00eame mois de naissance (4,4% de plus de naissances) et lorsqu&#039;un enfant avait le m\u00eame mois de naissance mois comme leur p\u00e8re (2% naissances de plus) \u00bb, ont d\u00e9clar\u00e9 les chercheurs dans un communiqu\u00e9. <a rel=\"noopener nofollow\" href=\"https:\/\/www.eurekalert.org\/news-releases\/1008752\" target=\"_blank\">communiqu\u00e9 de presse<\/a>.<\/p>\n<p>L&#039;\u00e9quipe attribue le ph\u00e9nom\u00e8ne aux caract\u00e9ristiques sociod\u00e9mographiques partag\u00e9es des membres de la famille. Des facteurs tels que la disponibilit\u00e9 de nourriture et l&#039;exposition au soleil affectent la fertilit\u00e9 d&#039;une personne. Les personnes issues de milieux similaires forment des couples et sont plus susceptibles d&#039;accoucher \u00e0 certaines p\u00e9riodes de l&#039;ann\u00e9e, ont expliqu\u00e9 les chercheurs.<\/p>\n<p>\u00ab Qu\u2019est-ce qui pourrait expliquer les probabilit\u00e9s plus \u00e9lev\u00e9es que des membres de la famille naissent au cours de la m\u00eame saison ? Les explications potentielles semblent \u00eatre \u00e0 la fois sociales et biologiques \u00bb, a d\u00e9clar\u00e9 l&#039;auteur de l&#039;\u00e9tude Adela Recio Alcaide, \u00e9pid\u00e9miologiste \u00e0 l&#039;Universit\u00e9 d&#039;Alcala.<\/p>\n<p>\u00ab Nous discutons de la tendance des membres d\u2019une famille \u00e0 na\u00eetre au cours de la m\u00eame saison comme le r\u00e9sultat de deux faits : premi\u00e8rement, les diff\u00e9rents groupes sociod\u00e9mographiques pr\u00e9sentent des sch\u00e9mas de naissance diff\u00e9renci\u00e9s et, deuxi\u00e8mement, les membres de la famille partagent des caract\u00e9ristiques sociod\u00e9mographiques. Enfin, nous concluons que la saison des naissances est li\u00e9e aux caract\u00e9ristiques familiales et que celles-ci doivent \u00eatre prises en compte lors de l\u2019\u00e9valuation des effets du mois de naissance sur les r\u00e9sultats sociaux\/sanitaires ult\u00e9rieurs \u00bb, ont not\u00e9 les chercheurs.<\/p>\n<p>Une limite de l&#039;\u00e9tude est que l&#039;analyse suppose une \u00ab ind\u00e9pendance des r\u00e9sultats \u00bb, mais les chercheurs mettent en garde contre l&#039;existence d&#039;une \u00ab d\u00e9pendance des r\u00e9sultats au sein des familles \u00bb, qui aurait pu affecter les r\u00e9sultats. Cependant, lorsque l\u2019\u00e9quipe a r\u00e9p\u00e9t\u00e9 l\u2019analyse apr\u00e8s ajustement pour ce facteur, les r\u00e9sultats \u00e9taient tr\u00e8s similaires.<\/p>","protected":false},"author":2,"featured_media":9191,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"page_builder":"","fifu_image_url":"https:\/\/urbancare.clinic\/wp-content\/uploads\/2023\/12\/many-mothers-and-their-children-share-same-birthday-month-heres-why.jpg","fifu_image_alt":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-9190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Many Mothers And Their Children Share Same Birthday Month; Here&#039;s Why - Urban Care Clinic<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/urbancare.clinic\/fr\/de-nombreuses-meres-et-leurs-enfants-partagent-le-meme-mois-danniversaire-voici-pourquoi\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Many Mothers And Their Children Share Same Birthday Month; Here&#039;s Why - Urban Care Clinic\" \/>\n<meta property=\"og:description\" content=\"Do you share your birthday month with your mom or child? It&#039;s a surprisingly common phenomenon, according to a new recent study that uncovered patterns in human birth seasonality. It turns out that women are more likely to have children in the same month as their birth, and births within immediate families tend to cluster within a given month.Researchers made the findings after evaluating data from more than 10 million deliveries in France and Spain \u2013 all births from 1980 to 1983 and from 2016 to 2019 in Spain, and all births from 2000 to 2003 and from 2010 to 2013 in France. The results were published in the journal Population Studies.&quot;Our results showed the existence of a similarity not only between parents&#039; and children&#039;s birth seasons but also between the two parents&#039; birth seasons, and between adjacent siblings&#039; birth seasons; this partially explains the stability of seasonal patterns over time,&quot; the researchers wrote.They observed that births within a particular country tend to follow a pattern, where certain times of the year have more births than others. This seasonal variation in human birth rate is known as birth seasonality.However, when the birth data was grouped based on the month of birth of the mothers, the researchers did not see the expected pattern. Instead, there was a spike in births in January among the group of mothers born in January and so on. There were 4.6% more births than expected in which the mother and child shared the same birth month. The result was consistent in both countries and all four time periods examined for the study.&quot;It was also the case for siblings (there were 12.1% more births than expected in which adjacent siblings had the same month of birth), parents with the same month of birth (4.4% more births) and when a child had the same birth month as their father (2% more births),&quot; the researchers said in a news release.The team attributes the phenomenon to shared socio-demographic features of family members. Factors such as the availability of food and exposure to sunlight affect a person&#039;s fertility. People with similar backgrounds are known to pair up and are more likely to give birth at certain times of the year, researchers explained.&quot;What could cause the higher probabilities of family members being born in the same season? The potential explanations seem to be both social and biological,&quot; said study author Adela Recio Alcaide, an epidemiologist at the University of Alcala.&quot;We discuss the tendency of family members to be born in the same season as the result of two facts: first, that different socio-demographic groups show differentiated birth patterns and, second, that relatives share socio-demographic features. Finally, we conclude that birth season is related to family characteristics and that these should be controlled for when assessing birth-month effects on subsequent social\/health outcomes,&quot; the researchers noted.A limitation of the study is that the analysis assumes an &quot;independence of outcomes,&quot; but researchers caution that there is a &quot;dependence of the outcomes within families,&quot; which could have affected the findings. However, when the team repeated the analysis after adjusting for this factor, the results were very similar.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/urbancare.clinic\/fr\/de-nombreuses-meres-et-leurs-enfants-partagent-le-meme-mois-danniversaire-voici-pourquoi\/\" \/>\n<meta property=\"og:site_name\" content=\"Urban Care Clinic\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/urbancarezanzibar\" \/>\n<meta property=\"article:published_time\" content=\"2023-12-15T06:59:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/urbancare.clinic\/wp-content\/uploads\/2023\/12\/many-mothers-and-their-children-share-same-birthday-month-heres-why.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Urban Care Clinic\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Urban Care Clinic\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/urbancare.clinic\\\/many-mothers-and-their-children-share-same-birthday-month-heres-why\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/urbancare.clinic\\\/many-mothers-and-their-children-share-same-birthday-month-heres-why\\\/\"},\"author\":{\"name\":\"Urban Care Clinic\",\"@id\":\"https:\\\/\\\/urbancare.clinic\\\/#\\\/schema\\\/person\\\/a304a61bcf298680ee41e2e9ae193930\"},\"headline\":\"Many Mothers And Their Children Share Same Birthday Month; 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Voici pourquoi - Clinique de soins urbains","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/urbancare.clinic\/fr\/de-nombreuses-meres-et-leurs-enfants-partagent-le-meme-mois-danniversaire-voici-pourquoi\/","og_locale":"fr_FR","og_type":"article","og_title":"Many Mothers And Their Children Share Same Birthday Month; Here's Why - Urban Care Clinic","og_description":"Do you share your birthday month with your mom or child? It's a surprisingly common phenomenon, according to a new recent study that uncovered patterns in human birth seasonality. It turns out that women are more likely to have children in the same month as their birth, and births within immediate families tend to cluster within a given month.Researchers made the findings after evaluating data from more than 10 million deliveries in France and Spain \u2013 all births from 1980 to 1983 and from 2016 to 2019 in Spain, and all births from 2000 to 2003 and from 2010 to 2013 in France. The results were published in the journal Population Studies.\"Our results showed the existence of a similarity not only between parents' and children's birth seasons but also between the two parents' birth seasons, and between adjacent siblings' birth seasons; this partially explains the stability of seasonal patterns over time,\" the researchers wrote.They observed that births within a particular country tend to follow a pattern, where certain times of the year have more births than others. This seasonal variation in human birth rate is known as birth seasonality.However, when the birth data was grouped based on the month of birth of the mothers, the researchers did not see the expected pattern. Instead, there was a spike in births in January among the group of mothers born in January and so on. There were 4.6% more births than expected in which the mother and child shared the same birth month. The result was consistent in both countries and all four time periods examined for the study.\"It was also the case for siblings (there were 12.1% more births than expected in which adjacent siblings had the same month of birth), parents with the same month of birth (4.4% more births) and when a child had the same birth month as their father (2% more births),\" the researchers said in a news release.The team attributes the phenomenon to shared socio-demographic features of family members. Factors such as the availability of food and exposure to sunlight affect a person's fertility. People with similar backgrounds are known to pair up and are more likely to give birth at certain times of the year, researchers explained.\"What could cause the higher probabilities of family members being born in the same season? The potential explanations seem to be both social and biological,\" said study author Adela Recio Alcaide, an epidemiologist at the University of Alcala.\"We discuss the tendency of family members to be born in the same season as the result of two facts: first, that different socio-demographic groups show differentiated birth patterns and, second, that relatives share socio-demographic features. Finally, we conclude that birth season is related to family characteristics and that these should be controlled for when assessing birth-month effects on subsequent social\/health outcomes,\" the researchers noted.A limitation of the study is that the analysis assumes an \"independence of outcomes,\" but researchers caution that there is a \"dependence of the outcomes within families,\" which could have affected the findings. However, when the team repeated the analysis after adjusting for this factor, the results were very similar.","og_url":"https:\/\/urbancare.clinic\/fr\/de-nombreuses-meres-et-leurs-enfants-partagent-le-meme-mois-danniversaire-voici-pourquoi\/","og_site_name":"Urban Care Clinic","article_publisher":"https:\/\/www.facebook.com\/urbancarezanzibar","article_published_time":"2023-12-15T06:59:10+00:00","og_image":[{"url":"https:\/\/urbancare.clinic\/wp-content\/uploads\/2023\/12\/many-mothers-and-their-children-share-same-birthday-month-heres-why.jpg","width":1024,"height":1024,"type":"image\/jpeg"}],"author":"Urban Care Clinic","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Urban Care Clinic","Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/urbancare.clinic\/many-mothers-and-their-children-share-same-birthday-month-heres-why\/#article","isPartOf":{"@id":"https:\/\/urbancare.clinic\/many-mothers-and-their-children-share-same-birthday-month-heres-why\/"},"author":{"name":"Urban Care Clinic","@id":"https:\/\/urbancare.clinic\/#\/schema\/person\/a304a61bcf298680ee41e2e9ae193930"},"headline":"Many Mothers And Their Children Share Same Birthday Month; 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