Elmira Gheytanchi1, Fariba Heshmati1, Bahareh Kordestani Shargh1, Jamileh Nowroozi1 and
Farahnaz Movahedzadeh2
1Department of Medical Microbiology, Medical School, Iran University of Medical Sciences, Hemmat High way, P. O. Box 14155-6183, Tehran, Iran.
2University of Illinois, Chicago, USA.
