Contexts and systems in studies of maternal and child health.
Becker
P T
PT
D005260:Female; D006801:Humans; D007223:Infant; D007229:Infant Welfare; D007231:Infant, Newborn; D007363:Intensive Care Units, Neonatal; D008429:Maternal Welfare; D009034:Mother-Child Relations; D011247:Pregnancy; D011295:Prenatal Care