1. Department of Echocardiography, Zhongshan Hospital, Fudan University , 180 Fenglin Road, Shanghai 200032 , China
2. Shanghai Institute of Medical Imaging , 180 Fenglin Road, Shanghai 200032 , China
3. Shanghai Institute of Cardiovascular Diseases , 180 Fenglin Road, Shanghai 200032 , China
4. Department of Cardiovascular Surgery, Zhongshan Hospital, Fudan University , 180 Fenglin Road, Shanghai 200032 , China