Nutrition and fertility.
D003906:Developing Countries; D005260:Female; D005298:Fertility; D006801:Humans; D007194:India; D007226:Infant Mortality; D007774:Lactation; D008297:Male; D008428:Maternal Mortality; D008572:Menarche; D009748:Nutrition Disorders / Q000453:epidemiology; D009747:Nutritional Physiological Phenomena; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D012744:Sex Ratio