[1] Jiamusi Univ, Sch Publ Hlth, Dept Epidemiol & Biostat, Jiamusi, Peoples R China
[2] Harbin Med Univ, Affiliated Hosp 2, Dept Cardiol, Harbin, Peoples R China
[3] Chinese Minist Educ, Key Lab Myocardial Ischemia, Harbin, Peoples R China
[4] State Key Lab Frigid Zone Cardiovasc Dis SKLFZCD, Harbin, Peoples R China
[5] 258 Xuefu Rd, Jiamusi 154007, Peoples R China