1. Department of Microbiology and Parasitology; School of Medicine; Bushehr University of Medical Sciences; Bushehr Iran
2. Persian Gulf Biomedical Research Center; Bushehr University of Medical Sciences; Bushehr Iran
3. Persian Gulf Tropical Medicine Research Center; Bushehr University of Medical Sciences; Bushehr Iran
4. Health Research Institute; Infectious and Tropical Disease Research Center; Ahvaz Jundishapur University of Medical Sciences; Ahvaz Iran