Effects of lactation on fertility.
D001721:Birth Intervals; D001942:Breast Feeding; D004958:Estradiol / Q000097:blood; D005260:Female; D005298:Fertility; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007774:Lactation; D007986:Luteinizing Hormone / Q000097:blood; D008598:Menstruation; D009747:Nutritional Physiological Phenomena; D010053:Ovary / Q000378:metabolism; D010060:Ovulation; D011247:Pregnancy; D011388:Prolactin / Q000097:blood
D004958:Estradiol; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone