title: Gestational age - fact or fallacy?
abstract: A historical review reveals that Naegele's rule was based on anecdotal evidence. This rule should be reviewed and calculations of true gestational age should be based on the probable date of ovulation and conception.
mesh_terms: D005260:Female; D005865:Gestational Age; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009774:Obstetrics / Q000266:history; D011247:Pregnancy