Introduction of the EVRF device by the secretary of the Society of Coloproctology and Colorectal Specialists Tehran Coloproctology Congress Great Saphenous Vein Treatment with Fcare GSV Thermal Erosion with Fcare System Introducing EVRF Introducing F Care System LDM Introducing Teaser LDM-MED Device LDM-MED Device Introducing HIDU Device Introducing EVRF Device LDM-MED Device Training