1. Research Center for Neuromodulation & Pain, Shiraz University of Medical Sciences, Shiraz, Iran
2. Department of Radiology, Shiraz University of Medical Sciences, Shiraz, Iran
3. University of Nevada, Las Vegas (UNLV), Las Vegas, NV 89154, USA
4. Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
5. Department of General Surgery, Shiraz University of Medical Sciences, Shiraz, Iran