Placental changes and maternal weight in smoking and nonsmoking mothers.
D000328:Adult; D000367:Age Factors; D001724:Birth Weight; D001835:Body Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009929:Organ Size; D010298:Parity; D010920:Placenta / Q000033:anatomy & histology*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology; D012907:Smoking / Q000150:complications