1. Division of Emergency Medicine; Children's Hospital; Boston
2. and Department of Pediatrics; Harvard Medical School; Boston MA
3. Ecole Polytechnique Federale de Lausanne; Lausanne Switzerland
4. the University of California; Berkeley
5. International Computer Science Institute; Berkeley CA
6. and the Division of Adolescent Medicine, Program for Patient Safety and Quality; Clinical Research Center, Children's Hospital; Boston
7. and the Department of Pediatrics; Harvard Medical School; Boston MA