1. B.M.A. Huisstede, PhD, Department of Rehabilitation Medicine and Physical Therapy, Erasmus MC-University Medical Center Rotterdam, and Department of Rehabilitation, Nursing Science & Sports, University Medical Center Utrecht, Building W01.121, PO Box 85500, 3508 GA Utrecht, the Netherlands.
2. P. Hoogvliet, MD, PhD, Department of Rehabilitation Medicine and Physical Therapy, Erasmus MC-University Medical Center Rotterdam.
3. J.H. Coert, MD, PhD, Department of Plastic & Reconstructive Surgery & Hand Surgery, Erasmus MC-University Medical Center Rotterdam.
4. J. Fridén, MD, PhD, Department of Hand Surgery, Sahlgrenska University Hospital, and Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.