Guo, Renwen
Chen, Jerry Yongqiang
Zhang, Guoqiang
Zhou, Yonggang
Chen, Jiying
Chai, Wei http://orcid.org/0000-0001-8781-9745
Article History
Received: 8 May 2019
Accepted: 18 October 2019
First Online: 3 November 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board of Chinese People’s Liberation Army General Hospital, Beijing, China (approval number S2018–087-02). This study has been performed in accordance with the Declaration of Helsinki. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.