1. Department of Cardiology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
2. Department of Emergency, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
3. Department of Emergency, Qianfoshan Hospital, Shandong First Medical University, Jinan, Shandong 250014, P.R. China
4. Department of Neurology, Qianfoshan Hospital, Shandong First Medical University, Jinan, Shandong 250014, P.R. China
5. Department of Cardiovascular Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
6. Ross University School of Medicine, Barbados 60515, Barbados
7. Department of Cardiovascular Medicine, Second Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China