1. Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
2. Department of Social Medicine, School of Medicine, Saga University, Saga 849-8501, Japan
3. Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
4. Department of Veterans Affairs Medical Center, VA Eastern Colorado Health Care System, Aurora, CO 80045, USA