1. Iena Plastic Surgery Clinic, Paris, France
2. RZANY & HUND, a private practice in Berlin, Germany
3. Mediti Centre, Antibes Juan-les-Pins, France
4. Starnberg Skin Centre, Starnberg, Germany
5. Dermatology Department, Cannes Hospital, Cannes, France
6. Division of Plastic and Reconstructive Surgery, Red Cross Hospital, Kassel, Germany
7. Dermatologist at the Clinique Chirurgicale Bel-Air, Bordeaux, France
8. Division of Cosmetic Science, Department of Chemistry, University of Hamburg, Hamburg, Germany
9. Ipsen Innovation, Les Ulis, Paris, France