[1] Rashid Hosp, Dept Dermatol, Dubai, U Arab Emirates
[2] King Abdul Aziz Med City, Dept Dermatol, Riyadh, Saudi Arabia
[3] St George Hosp Univ, Dept Dermatol, Med Ctr, Beirut, Lebanon
[4] Amer Univ Beirut, Dept Dermatol, Med Ctr, Beirut, Lebanon
[5] Univ Hosp Verona, Dept Dermatol, Verona, Italy
[6] King Faisal Hosp & Res Ctr, Dept Dermatol, Riyadh, Saudi Arabia
[7] Pfizer Inc, Dubai, U Arab Emirates