Postpartum amenorrhea in Turkey.
D000293:Adolescent; D000328:Adult; D000568:Amenorrhea; D003267:Contraception; D005260:Female; D006801:Humans; D007774:Lactation; D049590:Postpartum Period; D011247:Pregnancy; D012044:Regression Analysis; D013997:Time Factors; D014421:Turkey