title: Seasonality in Down's syndrome. An endocrinological explanation.
mesh_terms: D002875:Chromosomes / Q000187:drug effects; D003276:Contraceptives, Oral / Q000494:pharmacology; D004314:Down Syndrome / Q000453:epidemiology / Q000209:etiology* / Q000517:prevention & control; D005260:Female; D005306:Fertilization; D006801:Humans; D007231:Infant, Newborn; D008540:Meiosis; D010053:Ovary / Q000378:metabolism; D010060:Ovulation; D010063:Ovum / Q000473:pathology; D011247:Pregnancy; D011960:Receptors, Estrogen; D012621:Seasons
chemical_list: D003276:Contraceptives, Oral; D011960:Receptors, Estrogen