Journal of Pediatric Surgery, 57, 9, pp. 89-96 Journal of Pediatric Surgery, 57, 89-96 Journal of Pediatric Surgery, 57(9), 89-96. W B SAUNDERS CO-ELSEVIER INC Journal of Pediatric Surgery, 57(9), 89-96. W.B. Saunders Università degli Studi di Padova-IRIS