title: A new method for testing a hypothesis on a cause of polycystic ovary syndrome.
authors.forename: William H
authors.initials: WH
authors.lastname: James
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D018811:Maternal Exposure; D011085:Polycystic Ovary Syndrome / Q000209:etiology*; D012744:Sex Ratio; D035781:Siblings