Affiliation: | 1. Department of Cardiology, General Hospital of Jinan Military Command, Jinan, China;2. Department of Ultrasound, General Hospital of Jinan Military Command, Jinan, China;3. Department of Pathology, General Hospital of Jinan Military Command, Jinan, China;4. Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China;5. Third Sanatorium for Retired Cadres, Yantai Garrison, Shandong Province Military Region, Yantai, China |