Author/Authors :
Khademi, Farzad Department of Microbiology- School of Medicine- Ardabil University of Medical Sciences, Ardabil , Yousefi-Avarvand, Arshid Department of Medical Bacteriology and Virology- School of Medicine- Mashhad University of Medical Sciences, Mashhad , Vaez, Hamid Department of Microbiology- School of Medicine- Zabol University of Medical Sciences, Zabol
