1. Associate Professor of Dermatology, Boston University School of Medicine, Boston, Massachusetts, USA
2. Dermatology and Dermatologic Surgery Consultant, IDEAL Clinics, Najd Building, Jeddah, Kingdom of Saudi Arabia
3. Resident in Dermatology, University Hospital of Wuerzburg, Wuerzburg, Germany
4. Associate Professor of Dermatology and Biochemistry, Boston University School of Medicine, Boston, Massachusetts, USA