Daniel-Johannes Tilkorn1
, Marcus Lehnhardt1
, Jörg Hauser1
, Adrien Daigeler1
, Detlev Hebebrand2
, Thomas Mentzel3
, Hans Ulrich Steinau1
and Cornelius Kuhnen4 
1
Department of Plastic Surgery, Burn Center, Hand Center, Sarcoma Reference Center, BG-University-Hospital "Bergmannsheil", Ruhr-University Bochum, Germany
2
Department of Plastic – Reconstructive and Hand Surgery, Diakonie Hospital Rotenburg/Wümme, Germany
3
Dermatohistopathologische Gemeinschaftspraxis Friedrichshafen, Germany
4
Institute of Pathology, BG-University-Hospital "Bergmannsheil", Ruhr-University, Bochum, Germany