1. Department of Basic Sciences, Faculty of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
2. Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
3. Department of Physiology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
4. Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, United Kingdom