1. Interventional Department of Peripheral Vascular Disease, Gansu Provincial Hospital of TCM, Lanzhou, Gansu 730050, P.R. China
2. Department of Basic Nursing, Health School of Nuclear Industry, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
3. Institute of Clinical Research, Communicable Diseases Department, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China