The issue of the Spatial Economic Dimensions (SED) in generating regional Input-Output Coefficients (RIOC) has been well documented and recognized in the regional analysis since the 1950s. However. this issue has been overlooked in Iran. In this article. https://znbqho1adl5s.celticwiki.com/1456158/independent_research_as_a_resident_physician_novel_methods_for_data_collection_teaching_and_collaboration_during_graduate_medical_training