Liu, Peng Ju
Yao, Aimin http://orcid.org/0000-0002-1209-2913
Chen, Xiao Yan http://orcid.org/0000-0002-9988-3303
Liu, Yanping http://orcid.org/0000-0002-1947-0315
Ma, Liangkun
Hou, Yi Xuan http://orcid.org/0000-0001-9222-6100
Article History
Received: 9 March 2020
Accepted: 24 April 2020
First Online: 3 May 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was approved by the Ethics Committee of Peking Union Medical College Hospital of the Chinese Academy of Medical Science (Unique Protocol ID: hs-1646). This study was conducted in accordance with both the Declaration of Helsinki of 1975, as revised in 1983, and guidelines of the center’s institutional review board.
: All the participants were informed of the details of the study, and each participant provided written informed consent.