1. Department of Pulmonary Medicine, Faculty of Medicine , Mansoura University , Mansoura , Egypt
2. Mansoura University Sleep Center , Mansoura , Egypt
3. Public Health and Preventive Medicine , Faculty of Medicine, Mansoura University , Mansoura , Egypt
4. Assistant Professor of Psychiatry, Department of Psychiatry, Faculty of Medicine , Mansoura University , P.O. Box 36551 , Gomhoria Street, Mansoura 35511 , Egypt
5. Mansoura University Sleep Center , Mansoura , Egypt , E-mail:
6. Somnogen Canada Inc. , Toronto, ON , Canada
7. 652 Dufferin Street , Toronto, ON , Canada
8. The University Sleep Disorders Center , Department of Medicine, College of Medicine, King Saud University , Riyadh , Saudi Arabia
9. Strategic Technologies Program of the National Plan for Sciences, Technology, and Innovation , Riyadh , Saudi Arabia