1. Department of Health, Physical Education and Nursing, Bucks County Community College, Newtown, PA;
2. Division of Rheumatology, Tufts Medical Center, Boston, MA;
3. Department of Sports Medicine, West Chester University of Pennsylvania;
4. Department of Clinical Orthopedic Surgery, Temple University, Philadelphia, PA
5. Division of Adult and Community Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA