1. Department of Cardiology, People's Hospital of Qianxinan Buyi & Miao Minority Autonomous Prefecture, Guizhou Province, China
2. Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
3. Guizhou Medical University, No. 9 Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China