1 School of Medicine, Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran.
2 Department of Surgery, School of Medicine, Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran.
3 Department of Community Medicine, School of Medicine, Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran.
4 Department of Cardiology, School of Medicine, Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran.