Pediatric Surgery InternationalSeptember 1999, Volume 15, Issue 7, pp 528–528 | Cite asLetter to the editorAuthorsAuthors and affiliationsP. J. Wolfson 20 Downloads This is a preview of subscription content, log in to check access.Copyright information© Springer-Verlag Berlin Heidelberg 1999Authors and AffiliationsP. J. Wolfson11.Department of Pediatric Surgery, Alfred I. du Pont Hospital for Children, 1600 Rockland Road, Wilmington, DE 19899, USAUS