Institution: | a Clinic of Dermatology, University Hospital of Duesseldorf, Duesseldorf, Germanyb Institute of Transplantation and Cell Therapeutic, University Hospital of Duesseldorf, Duesseldorf, Germanyc Interfaculty Institute of Biochemistry, Faculty of Medicine, Eberhard Karls University of Tuebingen, Germanyd Institut National de la Santé et de la Recherché Médicale, Unité 595, Faculty of Medicine, Strasbourg, Francee Dental Faculty, University of Louis Pasteur, Strasbourg, France |