Effect of sex, maternal age, birth order, and socioeconomic status on the birth weight of live born infants.
D001722:Birth Order; D001724:Birth Weight; D001835:Body Weight; D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008423:Maternal Age; D036801:Parturition; D012923:Social Class
BODY WEIGHT/in infancy and childhood; INFANT, NEWBORN