Psychiatry and Behavioral Sciences Research Center, Ibn-e-Sina Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Psychiatry and Behavioral Sciences Research Center, Ibn-e-Sina Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran. Student Research Committee, Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Student Research Committee, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Dermatology, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran. Brighton & Sussex Medical School, Division of Medical Education, Falmer, Brighton, Sussex BN1 9PH, UK. Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad 99199-91766, Iran. Electronic address: ghayourm@mums.ac.ir.