1. George Washington Institute for Spirituality and Health, School of Medicine and Health Sciences, George Washington University , Washington, DC 20036, USA
2. Community Medicine Department, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81745-313, Iran
3. Vice-Chancellery for Treatment, Isfahan University of Medical Sciences (IUMS), Isfahan 81656-47194, Iran
4. Anesthesiology Department, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81745-313, Iran