1. Centre of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany
2. Department for Hand, Plastic, and Aesthetic Surgery, Ludwig-Maximilians-University Munich, Munich, Germany
3. Department for Plastic, Reconstructive, Hand, and Burn Surgery, Technical University Munich, StKM - Klinikum Bogenhausen, Academic Teaching Hospital, Munich, Germany
4. Division of Plastic Surgery, Mayo Clinic, Jacksonville, Florida