1. Department of Persian Medicine, School of Persian and Complementary Medicine; Mashhad University of Medical Sciences; Mashhad Iran
2. Department of Ear, Nose and Throat; Mashhad university of medical sciences; Mashhad Iran
3. Department of Biostatistics and Health Sciences Research Center; Mashhad University of Medical Sciences; Mashhad Iran
4. Student Research Committee, Department of Persian Medicine, School of Persian and Complementary Medicine; Mashhad University of Medical Sciences; Mashhad Iran