1. Clique Clinic, Kuala Lumpur, Malaysia
2. Division of Cosmetic Science, Department of Chemistry, University of Hamburg, Hamburg, Germany
3. SkinConcept, Munich, Germany
4. Private Practice for Dermatology and Aesthetics, Munich, Germany
5. Department of Plastic Surgery, Lenox Hill Hospital, New York, N.Y.
6. Ocean Clinic, Marbella, Spain
7. Yuvell, Aesthetic Clinic & Clinical Trial Center, Vienna, Austria
8. Clinical Research and Development, ICA Aesthetic Navigation GmbH, Frankfurt, Germany
9. CH Dermatologia, Medellin, Colombia.