1. Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China;
2. Department of Cardiology, Weifang People’s Hospital, Weifang, Shandong, China;
3. Department of Clinical Laboratory, Weifang People’s Hospital, Weifang, Shandong, China;
4. Department of Ultrasonography, Weifang People’s Hospital, Weifang, Shandong, China