Exclusion criteria included
death, congenital malformation, congenital intrauterine infection
BLOOD GROUP INCOMPATIBILITY, HEMOLYTIC DISEASE, METABOLIC DISEASE
(1) congenital intrauterine infection, (2) congenital malformation or inherited metabolic disease, (3) maternal-infant blood group incompatibility and hemolytic disease, (4) death or non-medical discharge within 2 weeks after birth.