1. COREMED—Cooperative Centre for Regenerative MedicineJOANNEUM RESEARCH Forschungsgesellschaft mbH Graz Austria
2. Division of Plastic, Aesthetic and Reconstructive Surgery Department of Surgery Medical University of Graz Graz Austria
3. Clinica Dermatologica Dipartimento di Scienze Mediche Chirurgiche e della Salute Università degli Studi di Trieste Trieste Italy
4. Department of Dermatology and Venereology Federal Hospital Wiener Neustadt Wiener Neustadt Austria