1. Student Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
2. Cancer Research Center, Cancer Research Institute, Tehran University of Medical Sciences, Tehran, Iran
3. School of Medicine, Iran University of Medical Sciences, Tehran, Iran
4. Emergency Medicine Management Research Center, Health Management Research Institute, Iran University of Medical Sciences, Tehran, Iran
5. Communicable disease office, Deputy of Health, Qazvin University of Medical Sciences, Qazvin, Iran.
6. Neurological Surgery Department, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran