1. Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
2. Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
3. Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
4. Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
5. Department of Social Sciences & Health Policy, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
6. Department of Dermatology, University of Southern Denmark, Odense, Denmark