[1] Harbin Med Univ, Affiliated Hosp 2, Dept Cardiol, Xuefu Rd, Harbin 150081, Heilongjiang, Peoples R China
[2] Harbin Med Univ, State Key Lab Frigid Zone Cardiovasc Dis SKLFZCD, Harbin, Heilongjiang, Peoples R China
[3] Chinese Minist Educ, Key Lab Myocardial Ischemia, Harbin, Heilongjiang, Peoples R China
[4] Harbin Med Univ, Affiliated Hosp 2, Cardiac Rehabil Ctr, Dept Cardiol, Harbin, Heilongjiang, Peoples R China