1. Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
2. Department of Microbiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
3. Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. Department of Parasitology & Mycology, Tehran University of Medical Sciences, P.O. Box 15468-15514, Tehran, Iran