Affiliation: | 1.Department of Internal Medicine, College of Medicine, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia ;2.University Sleep Disorders Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia ;3.King Abdullah Scholarship Program, Ministry of Education, Riyadh, Saudi Arabia ;4.Department of Pathology, College of Medicine, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia ;5.Pediatrics Sleep Disorders Center, Prince Sultan Military Medical City, Riyadh, Saudi Arabia ;6.Family and Community Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia ;7.National Plan for Science and Technology, College of Medicine, King Saud University, Box 225503, Riyadh, 11324, Saudi Arabia ; |