1. Clinical Research Development Unit, Hospital Research Development Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
2. Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
3. Cancer Research Center, Babol University of Medical Sciences, Babol, Iran
4. Department of Internal Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran
5. Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
6. Research Committee, Iran University of Medical Sciences, Tehran, Iran
7. Department of Clinical Oncology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
8. Department of Anesthesiology and Critical Care, Sabzevar University of Medical Sciences, Sabzevar, Iran
9. Sri Guru Ram Das University of Health Sciences, Amritsar, India
10. Edward Hines Jr. VA Hospital, Loyola University Chicago Stritch School of Medicine, Chicago, IL, USA
11. Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, USA
12. Saint Francis Hospital and Medical Center, Hartford, CT, USA