[Low birth-weight infants. I. Etiology].
D000293:Adolescent; D000328:Adult; D005260:Female; D005865:Gestational Age; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007234:Infant, Premature; D007236:Infant, Small for Gestational Age; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D011248:Pregnancy Complications
Estudios sobre el recién nacido de peso subnormal. I. Etiología.