1. Kantonsspital Luzern, Klinik für Hand‐und Plastische Chirurgie Lucerne Switzerland
2. Kantonsspital Graubünden, Departement Chirurgie, Handchirurgie Chur Switzerland
3. Broomfield Hospital, St Andrew's Centre for Plastic Surgery and Burns Chelmsford Essex United Kingdom
4. Swissparc AG, Hand Surgery Service Zürich Switzerland
5. Clinica Ars Medica, Centro Manoegomito Gravesano Switzerland