1. From the Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA.
2. Department of Dermatology and Allergology, Utrecht, Netherlands.
3. AbbVie Inc., Chicago, Illinois, USA.
4. Department of Dermatology, Medical Center, University of Freiburg, Freiburg, Germany.
5. Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.