1 Department of Echocardiography, Fuwai Yunnan Hospital, Chinese Academy of Medical Sciences/Affiliated Cardiovascular Hospital of Kunming Medical University, Yunnan, China (J.P.S., Y.W., J.Z., Z.L.).
2 Department of Cardiology, Cleveland Clinic Foundation, OH (J.P.S.).
3 Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, China (J.J.W.).