Correspondence to: Mohammed Ibrahim AlJasser, MBBS, FRCPC, King Saud bin Abdulaziz University for Health Sciences, Division of Dermatology, Ministry of National Guard Health Affairs, P.O. Box 3660, Riyadh 11481, Saudi Arabia.; College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia; King Abdullah International Medical Research Center, Riyadh, Saudi Arabia; and Division of Dermatology, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia