1. M. J. Mulcahey, PhD, OTR/L, is Director of Rehabilitation Services and Clinical Research, Shriners Hospitals for Children, 3551 North Broad Street, Philadelphia, PA 19140; mmulcahey@shrinenet.org
2. Nicole DiGiovanni, OTS, is Research Assistant, Shriners Hospitals for Children, Philadelphia, PA, and Occupational Therapy Student, Misericordia University, Dallas, PA
3. Christina Calhoun, MSPT, is Research Associate, Shriners Hospitals for Children, Philadelphia, PA
4. Erica Homko, MS, is Research Associate, Shriners Hospitals for Children, Philadelphia, PA
5. Ann Riley, PhD, RN, is Professor, John Hopkins Bloomberg School of Public Health, John Hopkins University, Baltimore, MD
6. Stephen M. Haley, PhD, is Professor, Health and Disability Research Institute, Boston University, Boston, MA