Family size and age of menarche.
D000293:Adolescent; D000367:Age Factors; D001722:Birth Order; D005191:Family Characteristics; D005260:Female; D005826:Genetics, Medical; D006128:Growth; D006801:Humans; D007194:India; D008572:Menarche; D009747:Nutritional Physiological Phenomena; D012959:Socioeconomic Factors