shervin shokouhi department of infectious diseases and tropical medicine, shahid beheshti university of medical sciences, tehran, ir iran; department of infectious diseases and tropical medicine, shahid beheshti university of medical sciences, tehran, ir iran. tel: +98-9141491958, fax: +98 21 55416170سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) ilad alavi darazam department of infectious diseases and tropical medicine, shahid beheshti university of medical sciences, tehran, ir iran; alimoradian hospital, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)