Yu, Yang
Gao, Shenshan
Yuen, Vivian Man-ying
Choi, Siu-Wai
Xu, Xuebing http://orcid.org/0000-0002-5042-0578
Article History
Received: 28 July 2020
Accepted: 18 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of University of Hong Kong - Shenzhen Hospital (szkcw201628) on April 8, 2016, and registered with the Clinical Trial Registry of China (ChiCTR-INR-16010130). We have obtained written informed consents from all of the participants in the study.
: Not applicable.
: The authors declare that they have no competing interests.