Changes in mortality and morbidities among infants born at less than 25 weeks during the post-surfactant era. - Hintz,SR.; Poole,WK.; Wright,LL.; Fanaroff,AA.; Kendrick,DE.; Laptook,AR.; Goldberg,R.; Duara,S.; Stoll,BJ.; Oh,W. (Arch Dis Child Fetal Neonatal Ed, 2005)