1. Dermatology Associates of Lancaster, Lancaster, PA, USA;
2. Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL, USA;
3. Division of Health Services Research, Department of Public Health Sciences, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA;
4. Department of Dermatology, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA