dr. qabad moradi, scientific secretary of the epidemiological society and member of the scientific committee of this congress , is our guest to discuss the details of this program . hello, good morning , welcome. to all dear viewers, thank you for your invitation , i am glad to be at your service. peace be upon you . in today's program, the 10th congress and the 3rd national congress and the 3rd international congress will be held from today to friday for 3 days. the 10th national congress of epidemiology of iran will be held by iran medical university, our colleagues in the department of epidemiology and ellum medical university of iran and with the support of the association. iran's religious festivals are held. if i want to give you general information, in this , of course, this is the third international congress, which means that we have important international speakers. nearly 700 participants until yesterday, i know, registration from all 31 provinces of the country, in addition to the international guests we have, nearly 600 articles submitted to this congress, and 177 different spee