1 Mayo Clinic Arizona, Department of Dermatology, 13400 E Shea Blvd, Scottsdale, Arizona 85259, USA.
2 Mayo Clinic Arizona, Department of Dermatology, 13400 E Shea Blvd, Scottsdale, Arizona 85259, USA, University of Arizona College of Medicine - Tucson, 1501 N Campbell Ave, Tucson, Arizona 85724, USA.