1. Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
2. Department of Cardiovascular Diseases Prevention, Liaoning Provincial Center for Disease Control and Prevention, Shenyang, Liaoning, People’s Republic of China
3. Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China