1. Department of Cardiology, Shaanxi Provincial People's Hospital, Xi’an, Shaanxi, China
2. Department of Cardiology, Third Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
3. Department of Cardiology, Xianyang Hospital, Yan’an University, Xianyang, Shaanxi, China
4. Department of Cardiology, First Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia, China
5. Department of Neurology, Shaanxi Provincial People's Hospital, Xi’an, Shaanxi, China