Department of Cardiology Chongqing General Hospital Chongqing 400013 China;
Department of Cardiology the Third People s Hospital of Xinjiang Uygur Autonomous Region Urumqi 830000 China;
Department of Cardiology the First People s Hospital of Tianshui Tianshui 741000 China;
Department of Cardiology Chongqing General Hospital Chongqing 400013 China;
Department of Cardiology the Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou 310009 China;