[1] 215 Hosp Shaanxi Nucl Ind, Dept Cardiol, 35 Weiyang West Rd, Xianyang 712000, Shaanxi, Peoples R China
[2] Xingyuan Hosp Yulin City, Dept Cardiol, Yulin 719000, Shaanxi, Peoples R China
[3] Nanchang Univ, Med Coll, Dept Clin Med, Nanchang 330031, Jiangxi, Peoples R China
[4] Cent Hosp Xian City, Dept Clin Lab, Xian 710003, Shaanxi, Peoples R China
[5] 5 Hosp Xian City, Dept Internal Med, Xian 710082, Shaanxi, Peoples R China
[6] Cent Hosp Baoji City, Dept Clin Lab, Baoji 721008, Shaanxi, Peoples R China
[7] Yanan Univ, Affiliated Hosp, Dongguan Cardiovasc & Cerebrovasc Dis Hos, Dept Cardiovasc,Med Ctr, Yanan 716000, Shaanxi, Peoples R China