Affiliation: | 1. Department of Echocardiography, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China;2. Department of Cardiology, Stamford Hospital, Columbia University College of Physicians & Surgeons, Stamford, CT, USA;3. Department of Radiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China;4. Departments of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China |