ﻣﻄﺎﻟﻌﺔ ﺗﺠﺮﺑﻲ ﺭﺍﺑﻄﻪ ﺑﻴﻦ ﻧﺮﺥ ﺍﺭﺯﺗﻮﺭﻡ ﺩﺭ ﺍﻳﺮﺍﻥ