Smoking status and planned hospital births.
Barros
Enrique F
EF
D001938:Brazil; D005260:Female; D006700:Home Childbirth / Q000639:trends; D006801:Humans; D007231:Infant, Newborn; D007744:Obstetric Labor Complications / Q000517:prevention & control*; D036801:Parturition; D011247:Pregnancy; D018570:Risk Assessment; D012907:Smoking / Q000009:adverse effects*