1. Centre of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany;
2. Department for Plastic and Hand Surgery, CHUV Centre de la Main, Lausanne, Switzerland;
3. Department of Hand, Plastic, and Aesthetic Surgery, Ludwig-Maximilians University Munich, Munich, Germany;
4. Department of Plastic, Reconstructive, Hand and Burn Surgery, StKM – Klinikum Bogenhausen Academic Teaching Hospital Technical University Munich, Munich, Germany