Correspondence:
Rezvan Hosseinzadeh, Student Research Committee, Babol University of
Medical Sciences, Babol, Iran. Email:
r.hosseinzadeh@mubabol.ac.ir
Soheil Ebrahimpour, Infectious Diseases, and Tropical Medicine
Research Center, Health Research Institute, Babol University of
Medical Sciences, Babol, Iran. Email:
drsoheil1503@yahoo.com