[Zhang, Kun] Sun Yat Sen Univ, Affiliated Hosp 7, Dept Cardiol, 628 Zhenyuan Rd, Shenzhen 518107, Peoples R China.
[Huang, Chunlan] Univ South China, Affiliated Hosp 2, Dept Neurol, 30 Jiefang Rd, Hengyang 421001, Peoples R China.
[Li, Junping] Guangdong Second Prov Gen Hosp, Dept Urol, 466 Xingang Middle Rd, Guangzhou 510317, Peoples R China.
[Mai, Peibiao] Chinese Acad Med Sci, Fuwai Hosp, Shenzhen Sun Yat sen Cardiovasc Hosp, Dept Cardiol, Shenzhen, Peoples R China.
[Xu, Shuwan] Peking Univ Third Hosp, Dept Cardiol, 49 Huayuan North Rd, Beijing 100191, Peoples R China.