1. Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
2. Department of Dermatology, Columbia University Irving Medical Center, New York, NY, USA
3. Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
4. Division of Biostatistics, UC Berkeley School of Public Health, Berkeley, CA, USA
5. Cutaneous Lymphoma Program, University of Pittsburgh, Pittsburgh, PA, USA
6. Department of Dermatology, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
7. Department of Dermatology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
8. Hospital 12 de Octubre, Institute i + 12, CIBERONC, Medical School, University Complutense, Madrid, Spain
9. Attikon General University Hospital, National and Kapodistrian University of Athens, Athens, Greece
10. Dermatologic Clinic, Department of Medical Sciences, University of Turin Medical School, Turin, Italy
11. Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
12. Department of Dermatology, University Hospital Birmingham, Birmingham, United Kingdom
13. Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark