Affiliation: | 1. Thoracic Surgery, Endoscopic and Minimally Invasive Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran;2. Pulmonologist, Lung Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran;3. General Surgery, Endoscopic and Minimally Invasive Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran;4. Student Research Committee, Mashhad University of Medical Science, Mashhad, Iran |