1. University of California Davis School of Medicine, Sacramento, California, USA
2. David Geffen School of Medicine at the University of California, Los Angeles, California, USA
3. The Center for Dermatology Research, 3Departments of Dermatology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
4. The Center for Dermatology Research Departments of Pathology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
5. The Center for Departments of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA