Rh factor and premature birth.
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
BLOOD GROUPS, ABO/Rh factor; PREGNANCY/prematurity
Rh.-Faktor und Frühgeburt.