Khalil S, Rodarte A, Weldon BC, Weinstein M, Grunwald Z, Ginsberg B, Kaye R, Otto A, Wheeler M, Lawhorn CD, Prillaman BA, Creed M. Intravenous ondansetron in established postoperative emesis in children. S3A-381 study group. Anesthesiology. 1996 Aug;85(2):270-6. doi: 10.1097/00000542-199608000-00007