1. Avoca Clinic - Private Practice, Wicklow, Ireland
2. Centre for Plastic and Aesthetic Surgery, Ocean Clinic Marbella, Marbella, Spain
3. Department of Plastic, Aesthetic and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Bayern, Germany
4. Division of Hand, Plastic and Aesthetic Surgery, University Hospital Munich, Ludwig Maximilian University, Munich, Germany
5. Department of Dermatology, Erasmus Hospital, Rotterdam, The Netherlands
6. Centre for Cutaneous Research, Blizard Institute, Queen Mary University of London, London, UK