1. K. Papp Clinical Research and Probity Medical Research, Waterloo, ON, Canada
2. Department of Dermatology, University of Medical Sciences, Poznań, Poland
3. Western University, London, ON, Canada
4. LEO Pharma, Ballerup, Denmark
5. Medical Centre DrDerm, Nowy Targ, Poland
6. Non-Public Health Care Centre Med-Laser, Lublin, Poland
7. Lynde Dermatology and Probity Medical Research, Markham, ON, Canada
8. Department of Medicine, University of Toronto, Toronto, ON, Canada
9. San Antonio Skin Care and Dermatology Clinic, Shavano Park, TX, USA
10. Department of Dermatology, Center for Clinical Studies, University of Texas Health Science Center, Houston, TX, USA
11. Premier Clinical Research, Spokane, WA, USA
12. Department of Dermatology, University of Rzeszów, Rzeszów, Poland
13. Department of Dermatology, Weill Medical College of Cornell University, New York, NY, USA
14. Brunswick Dermatology Centre, Fredericton, NB, Canada
15. Department of Dermatology, University Hospital of Nice, Nice, France