1. Laser Department, Department of Dermatology and Venereology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
2. Department of Dermatology and Venereology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
3. Interdisciplinary Transgender Health Care Centre Hamburg, Department for Sex Research and Forensic Psychiatry, University Medical Centre Hamburg-Eppendorf (UKE), Germany