Mohammad-Saeed Sasan*1, MD; Fatemah Riyahi Zanian2, MS; Batol Birjandi3, MD; Mahbobe Naderinasab2, MD, PhD, and MohammadMahdi Ejtehadi2, PhD 1. Department of Pediatrics, Mashhad University of Medical Sciences, Mashhad, Iran 2. Department of Microbiology, Mashhad University of Medical Sciences, Mashhad, Iran 3. Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran Received: J...