Age at menarche. Genetic and environmentalinfluences.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000375:Aging; D000531:Altitude; D002648:Child; D004194:Disease; D004777:Environment; D005191:Family Characteristics; D005260:Female; D005826:Genetics, Medical; D005843:Geography; D006128:Growth; D006801:Humans; D006813:Humidity; D008027:Light; D008598:Menstruation; D009747:Nutritional Physiological Phenomena; D011611:Psychosomatic Medicine; D044469:Racial Groups; D012423:Rural Health; D012621:Seasons; D012959:Socioeconomic Factors; D013696:Temperature; D014505:Urban Population