1. Department of Otorhinolaryngology School of Medicine Kermanshah University of Medical Sciences Kermanshah Iran
2. Department of Ophthalmology School of Medicine Kermanshah University of Medical Sciences Kermanshah Iran
3. Department of Pathology School of Medicine Kermanshah University of Medical Sciences Kermanshah Iran
4. Department of Anesthesiology School of Medicine Kermanshah University of Medical Sciences Kermanshah Iran
5. Sleep Disorders Research Center Kermanshah University of Medical Sciences Kermanshah Iran
6. Department of Interna Medicine, School of Medicine Kermanshah University of Medical Sciences Kermanshah Iran
7. Department of Infectious Disease School of Medicine Kermanshah University of Medical Sciences Kermanshah Iran
8. Imam Khomeini and Mohamad Kermanshahi Clinical Research Development Unit Kermanshah University of Medical Sciences Kermanshah Iran
9. Infectious Diseases Research Center Health Institute Kermanshah University of Medical Sciences Kermanshah Iran