1. Emergency Department of China-Japan Friendship Hospital, Chaoyang District, Beijing, China
2. Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
3. Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
4. Trauma Medicine Center, Peking University People’s Hospital, Beijing, China
5. Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing, China