Pietro G di Summa1, D Guillier2. 1. Consultant Plastic and Reconstructive Surgeon, Department of Plastic and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland. Electronic address: pietro.di-summa@chuv.ch. 2. Consultant Plastic and Reconstructive Surgeon, Department of Plastic and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland; Department of Plastic Reconstructive and Hand Surgery, Department of Oral and Maxillofacial Surgery - University Hospital, Boulevard de Lattre de Tassigny F-21000, Dijon, France.