Breastfeeding and fertility.
D001721:Birth Intervals; D001942:Breast Feeding; D005193:Family Planning Services; D006262:Health; D006287:Health Planning Guidelines; D007227:Infant Nutritional Physiological Phenomena; D007774:Lactation; D009747:Nutritional Physiological Phenomena
Birth Spacing; Breast Feeding; Family Planning; Family Planning, Behavioral Methods; Health; Infant Nutrition; Lactation, Prolonged; Nutrition; Recommendations