1. Department of Hand, Plastic, and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
2. Division of Hospital Hygiene, Darmstadt Clinic, Darmstadt, Germany
3. Department of Plastic and Reconstructive Surgery, Burn Centre, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
4. Department of Hygiene, University of Applied Science, Giessen-Friedberg, Germany