1. Universiry Hospital of Plastic and Reconstructive Surgery, Universiry of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
2. Hospital ‘Barmherzige Brüder’ Salzburg, Kajetanerplatz 1, A-5020 Salzburg, Austria
3. Department of Surgery, St Vincent's Hospital, Melbourne, Victoria 3065, Australia