1 Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado.
2 College of Osteopathic Medicine, Rocky Vista University, Parker, Colorado.
3 College of Human Medicine, Michigan State University, East Lansing, Michigan.
4 Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado; Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colorado. Electronic address: robert.dellavalle@cuanschutz.edu.