Gastroenterology and nutrition
Harvard Medical School, Division of Emergency Medicine, Children's Hospital Boston, Boston, Massachusetts, USA
Correspondence to Mark L. Waltzman, Assistant Professor, Harvard Medical School, Division of Emergency Medicine Children's Hospital, 300 Longwood Ave, Boston, Massachusetts 02115, USA Tel: +1 617 355 6624; fax: +1 617 730 0335; e-mail: [email protected]
doi: 10.1097/01.mop.0000245361.91077.b5