title: Seasonality of abnormal births and the "SPOO" hypothesis.
mesh_terms: D000328:Adult; D000013:Congenital Abnormalities / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D010063:Ovum / Q000502:physiology; D012621:Seasons