1. M Campo, PT, PhD, OCS, is Assistant Professor, Program in Physical Therapy, Mercy College, 555 Broadway, Dobbs Ferry, NY 10522 (USA).
2. S Weiser, PhD, is Research Assistant Professor, Orthopaedic Surgery and Environmental Medicine, New York University, and Senior Manager of Psychological Services, Occupational and Industrial Orthopaedic Center, NYU Hospital for Joint Diseases, New York, NY.
3. KL Koenig, PhD, is Assistant Professor, Department of Environmental Medicine, New York University School of Medicine, New York, NY.
4. M Nordin, DrMedSci, is Director, Occupational and Industrial Orthopaedic Center, NYU Hospital for Joint Diseases, Program Director, Graduate Program of Ergonomics and Biomechanics, and Research Professor, Orthopaedic Surgery and Environmental Medicine, New York University.