1. Pain Relief Program, Connecticut Children's Medical Center, Hartford, Connecticut
2. Department of Pediatrics, University of Connecticut School of Medicine, Farmington, Connecticut
3. Department of Pediatrics, St Francis Hospital and Medical Center, Hartford, Connecticut
4. Department of Psychology, Georgia State University, Atlanta, Georgia
5. Centre for Research in Pediatric Pain, IWK Health Centre, Halifax, Nova Scotia, Canada
6. Department of Psychology, Dalhousie University, Halifax, Nova Scotia, Canada