- Correspondence to Professor Liancheng Zhao, Division of Prevention and Community Health, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; and Professor Xiaoqing Liu, Department of Epidemiology Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China ;
- Received December 17, 2017
- Revised March 5, 2018
- Accepted April 2, 2018
- First published April 13, 2018.
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