Midwifery. 1. Prevention of prematurity.
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008880:Midwifery; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011295:Prenatal Care