Received: 18 August 2020
Accepted: 5 October 2020
First Online: 17 October 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committees of the Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, and the participant provided written informed consent.
: Not applicable.
: All authors declare that they have no any conflict of interests.