1 Indiana University School of Medicine, Indianapolis, Indiana.
2 University of Cincinnati College of Medicine, Cincinnati, Ohio.
3 Department of Dermatology, University of Colorado School of Medicine, Aurora, Colorado; Dermatology Service, Rocky Mountain Regional VA Medical Center, Aurora, Colorado.
4 Department of Dermatology, University of Colorado School of Medicine, Aurora, Colorado; Dermatology Service, Rocky Mountain Regional VA Medical Center, Aurora, Colorado. Electronic address: robert.dellavalle@ucdenver.edu.