title: Four factors influencing birth weight.
mesh_terms: D000328:Adult; D001722:Birth Order; D001724:Birth Weight; D005163:Factor Analysis, Statistical; D005260:Female; D005313:Fetal Death; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D009518:New York; D011247:Pregnancy; D012621:Seasons