JIANG Chun-Ying, WANG Rui, LI Xu-Dong, WU Qiang, and HAN Bing
(1.Department of Cardiology, Xuzhou Central Hospital, Xuzhou, Jiangsu 221009, China 2.Department of Ultrasound, the Third Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221003, China)
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