1. Division of Plastic Surgery, Department of Trauma Surgery, Plastic and Reconstructive Surgery, University Medical Centre, Göttingen, Germany.
2. Division of Plastic Surgery, University of Massachusetts Medical School, Worcester, Massachusetts.
3. Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Freiburg, Germany.
4. Lymphologische Fachklinik, Földiklinik, Hinterzarten, Germany, Competence Network for Lymphology, Freiburg–Hinterzarten, Germany.
5. Institute of Pathology, University Medical Centre, Göttingen, Germany.