1. University of Southern California Keck School of Medicine, Los Angeles, CA, USA;
2. Department of Dermatology, Psoriasis and Skin Treatment Center, University of California San Francisco, San Francisco, CA, USA;
3. University of Vermont College of Medicine, Burlington, VT, USA;
4. University of California Irvine School of Medicine, Irvine, CA, USA;
5. University of Texas at Austin, Dell Medical School, Austin, TX, USA;
6. Seton Family of Hospitals, Austin, TX, USA