1. Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
2. Department of Chronic Disease, Liaoning Provincial Center for Disease Control and Prevention, Shenyang, People's Republic of China
3. Department of Neurology, Central Hospital of Dan Dong City, Dan Dong, Liaoning, People's Republic of China
4. Department of Chronic Disease, Disease Control and Prevention of Dan Dong City, Dan Dong, Liaoning, People's Republic of China
5. Department of Neurology, Central Hospital of Liao Yang City, Liao Yang, Liaoning, People's Republic of China
6. Department of Chronic Disease, Disease Control and Prevention of Liao Yang City, Liaoyang, Liaoning, People's Republic of China
7. Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China