Hoffmann, Klaus, Senior member Dermatological Department Ruhr University as well as Chairman of the Department of Aesthetic Medicine and Surgey at the St. Josef-Hospital in Bochum, Germany Dermatologist, Aesthetic Surgeon, Laser Specialist - Different board recognized spezialisations, about 400 per reviewed papers, 9 books, about 1000 lectures on national and international congresses - winner Beauty trophy 2013 - several other national and international prices