title: A study on the relationships of lactation, postpartum amenorrhea and contraceptive practice.
authors.lastname: Whang K-h
authors.lastname: Kwon E-h
authors.lastname: Kang K-w
mesh_terms: D000568:Amenorrhea; D001695:Biology; D003267:Contraception; D003268:Contraception Behavior; D004194:Disease; D005193:Family Planning Services; D007723:Korea; D007774:Lactation; D010342:Patient Acceptance of Health Care; D010827:Physiology; D049590:Postpartum Period; D011247:Pregnancy; D011644:Puerperal Disorders; D012098:Reproduction; D017584:Reproductive History