Specialist in General Surgery, Specialist in Plastic Surgery, additional certified qualification in Hand Surgery.
Professor and Chairman of the Department of Plastic Surgery, Hand Surgery, Burn Center at the University Hospital of the RWTH Aachen University.
Honorary Prof. mult. (University of Nanjing,China, Romanian Society of Plastic, Reconstructive and Aesthetic Surgery, University of Padova, Italy)
President of the European Board of Plastic, Reconstructive and Aesthetic Surgery (EBOPRAS).
Parliamentarian of the Board of Directors of the International Confederation for Plastic Reconstructive and Aesthetic Surgery (IPRAS)
Secretary of the International Society for Plastic Regenerative Surgery (ISPRES)
Vice-President of the World Federation of Chinese Medicine Societies (WFCMS)
Board Member of many national and international associations
More than 300 publications in peer reviewed journals
Function as Reviewer for many organizations and journals
Member of the Editorial Board of several journals.