1. Antwerp Dermatology Clinic, Antwerpen, Belgium.
2. Private Practice, Mons, and University Hospital Saint-Luc, Catholic University of Louvain, Brussels, Belgium.
3. Novartis Pharma, Vilvoorde, Belgium.
4. Matrix45, Basel, Switzerland.
5. Matrix45, Flagstaff, AZ, USA.
6. College of Nursing, The University of Arizona, Tucson, AZ, USA.
7. Matrix45, Tucson, AZ, USA.
8. Center for Health Outcomes and Pharmacoeconomic Research, College of Pharmacy, The University of Arizona, Tucson, AZ, USA.