Document Type: Letter to the Editor


1 Bsc in Anesthesia, Msc students in nursing education, student research committee, member of experimental talents, Gonabad university of Medical Sciences. Gonabad, IRAN. Email: Tell: +989156554507

2 Anesthesiologist, Department of Anesthesiology, School of Medicine, Mashhad university of Medical Sciences, Mashhad, Iran.

3 PhD in Psychology, AJA University of medical sciences, Tehran, Iran.


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