title: Seasonal inconstancy of human sex ratio at birth.
abstract: A large body of literature describes relationships between the sex ratio at birth and modifying factors. The relationships that display seasonal fluctuations are hypothesized to reflect causal impact of periconceptional and later intrauterine effects. This short review summarizes the results of studies that investigated internal and external influences on the seasonal pattern of human sex ratio at birth.
authors.affiliation: Scientific Research Institute of Physiology and Basic Medicine, 4, Timakov str., P.O. Box 237, Novosibirsk 630117, Russia. Electronic address: mevlanic@yandex.ru.
authors.forename: Vladimir N
authors.initials: VN
authors.lastname: Melnikov
mesh_terms: D001835:Body Weight / Q000502:physiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009035:Mothers; D036801:Parturition; D012621:Seasons; D012744:Sex Ratio; D012959:Socioeconomic Factors
keywords: Birth; Rhythm; Season; Sex ratio