TY - JOUR AU - Ballard, J L; Khoury, J C; Wedig, K; Wang, L; Eilers-Walsman, B L; Lipp, R TI - New Ballard Score, expanded to include extremely premature infants JO - J Pediatr IS - 03 VL - 119 PY - 1991 DO - 10.1016/S0022-3476(05)82056-6 L3 - PubMed-ID: 1880657 SP - 417 EP - 423 ER -