1. Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
2. Department of Plastic and Reconstructive Surgery, Saint George University Hospital of Beirut, Beirut, Lebanon
3. Department of Vascular Surgery, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
4. Department of Plastic, Reconstructive and Aesthetic Surgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland