G6PD and polycythemia: The causes of jaundice were physiological jaundice in 62 (41%) newborns, ABO incompatibility in 45 (30%), Rh incompatibility in 10 (6.6%), G6PD in 14 (9.3%), polycythemia in 13 (8.6%), and cephalohematoma in 7 (4.6%).