[Field survey of pregnant women predisposed to have premature birth].
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008427:Maternal Health Services; D007752:Obstetric Labor, Premature / Q000517:prevention & control; D011247:Pregnancy; D011295:Prenatal Care
Supravegherea în teren a gravidei predispusă la naştere prematură.