1. Department of Dermatology College of Medicine, Alfaisal University Riyadh Saudi Arabia
2. Department of Dermatology King Saud Medical City Riyadh Saudi Arabia
3. Department of Dermatology King Fahad Medical City Riyadh Saudi Arabia
4. Universidade Católica de Brasília Taguatinga Brazil
5. Department of Dermatology Security Forces Hospital Riyadh Saudi Arabia