Document Type : Original Article
Authors
1 Associate Professor, Department of Microbiology & Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
2 General practitioner, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
3 Assistant Professor, Department of Microbiology & Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
4 Assistant Professor, Department of Community Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Abstract
Keywords