1. Winterthur Institute of Health Economics, Zurich University of Applied Sciences, Winterthur, Switzerland
2. Medical Tariff Committee for Swiss National Accident Insurance (MTK UVG), Lucerne, Switzerland
3. Department of Hand-Plastic and Reconstructive Surgery, University Hospital Zurich, Zurich, Switzerland
4. Division of Hand and Plastic Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland