1. Department of Dermatology Erasmus Medical Center Rotterdam The Netherlands
2. Private Practice Amsterdam The Netherlands
3. Division of Anatomy Department of Medical Education Albany Medical College Albany NY USA
4. Dallas Plastic Surgery Institute Dallas TX USA
5. Westmount Institute of Plastic Surgery Montreal Quebec Canada
6. Private Practice New York NY USA
7. Department for Hand, Plastic and Aesthetic Surgery Ludwig – Maximilian University Munich Munich Germany
8. Department of Clinical Anatomy Mayo Clinic College of Medicine and Science Rochester MN USA