1. M.S. Ardon, PT, MSc, Department of Rehabilitation Medicine, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, the Netherlands.
2. W.G.M. Janssen, MD, PhD, Department of Rehabilitation Medicine, Erasmus University Medical Center.
3. S.E.R. Hovius, MD, PhD, Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus University Medical Center.
4. H.J. Stam, MD, PhD, Department of Rehabilitation Medicine, Erasmus University Medical Center.
5. M. Murawska, MSc, Department of Biostatistics, Erasmus University Medical Center.
6. M.E. Roebroeck, PhD, Department of Rehabilitation Medicine, Erasmus University Medical Center.
7. R.W. Selles, PhD, Department of Rehabilitation Medicine and Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus University Medical Centre.