1. SM Haley, PT, PhD, is Associate Director, Health and Disability Research Institute, Boston University, Boston, Mass, and Director of Research, Research Center for Children With Special Health Care Needs, Franciscan Hospital for Children, Boston, Mass
2. MA Fragala-Pinkham, PT, MS, is Research Associate, Health and Disability Research Institute, Boston University, and Clinical Researcher, Research Center for Children With Special Health Care Needs, Franciscan Hospital for Children