1. Department of Dermatology and Cutaneous Surgery; University of Miami; Miami Florida
2. Department of Plastic Surgery; School of Medicine; Georgetown University; Washington, DC
3. Departments of Dermatology and Epidemiology; University of Pennsylvania; Philadelphia Pennsylvania
4. Department of Infectious Diseases and Topical Medicine; The Free University of Amsterdam; Amsterdam The Netherlands
5. Department of Plastic Surgery; University of Texas Southwestern Medical Center; Dallas Texas