[Distribution of the ABO blood groups in premature infants].
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D002648:Child; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
BLOOD GROUPS/in infancy and childhood