1 Bu Ali-Sina Clinical Research Development Unit, Mazandaran University of Medical Sciences, Mazandaran, Iran ; Diabetes Research Center, Mazandaran University of Medical Sciences, Mazandaran, Iran.
2 Department of Periodontics, Dental Faculty, Diabetes Research Center, Mazandaran, Iran.
3 Diabetes Research Center, Mazandaran University of Medical Sciences, Mazandaran, Iran.
4 Bu Ali-Sina Clinical Research Development Unit, Mazandaran University of Medical Sciences, Mazandaran, Iran.
5 Research Committee, Mazandaran University of Medical Sciences and Health Services, Mazandaran, Iran.
6 Department of Dentistry, Mazandaran University of Medical Sciences, Mazandaran, Iran.
7 Student Research Committee, Mazandaran University of Medical Sciences, Mazandaran, Iran.
8 Department of Biostatistics, Mazandaran University of Medical Sciences and Health Services, Sari, Iran. E-mail: avideh48188@yahoo.com.