[Ouyang, Xinping;Li, Jin-Feng;Li, Yuanhui;He, Pingping] Univ South China, Inst Cardiovasc Dis, Coll Med, Dept Physiol, Hengyang, Peoples R China.^[Wang, Bo;Liao, Huiying;Fu, Wan] Univ South China, First Affiliated Hosp, Hengyang, Peoples R China.^[Zhang, Tao] Univ South China, Second Affiliated Hosp, Hengyang, Peoples R China.^[He, Pingping] Univ South China, Sch Nursing, Hengyang, Peoples R China.