1. Surgical Department – Hand Surgery Unit EOC, Locarno’s Regional Hospital, 6600 Locarno, Switzerland
2. Locarno Hand Center, Via Ramogna 16, 6600 Locarno, Switzerland
3. Department of Plastic Surgery, First Faculty of Medicine, Charles University and Na Bulovace University Hospital, Budinova 67/2, 18081 Prague 8-Liben, Czech Republic
4. Department of Plastic Surgery and Hand Surgery, University Hospital Zürich, 8091 Zürich, Switzerland