1 Department of Neurology, School of Medicine, Musculoskeletal Rehabilitation Research Center, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
2 Department of Medical Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
3 Department of Medicine, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.