1. University of Washington; Harborview Injury Prevention Center; Seattle USA
2. Child Health Institute; Division of General Pediatrics; 6200 N.E. 74th Street Suite 210 Seattle WA USA 98115-8160
3. Group Health Cooperative of Puget Sound; Department of Preventive Care; Metropolitan Prk II 1730 Minor Avenue, Suite 1600 Seattle USA WA 98101