1 Department of Cardiology, Chengdu First People's Hospital, Chengdu, Sichuan, China.
2 Department of Cardiology, Chengdu First People's Hospital, Chengdu, Sichuan, China; Department of Nephrology, Chengdu First People's Hospital, Chengdu, Sichuan, China.
3 Department of Neurology, Chengdu Third People's Hospital, Chengdu, Sichuan, China.
4 Department of Intensive Care Unit, Chengdu First People's Hospital, Chengdu, Sichuan, China. Electronic address: lyzengjian@163.com.