1 Department of Dermatology, University of Colorado School of Medicine, Aurora, Colorado.
2 Rocky Vista University, School of Osteopathic Medicine, Parker, Colorado.
3 Case Western Reserve University, School of Medicine, Cleveland, Ohio.
4 Department of Dermatology, University of Minnesota School of Medicine, Minneapolis, Minnesota; Dermatology Service, US Department of Veterans Affairs, Minneapolis VA Medical Center, Minneapolis, Minnesota. Electronic address: della056@umn.edu.