Received: 16 December 2020
Accepted: 29 March 2021
First Online: 12 June 2021
: Ethics approval was obtained from the Chinese University of Hong Kong, Hong Kong SAR, CRE Ref. No. 2019.250 (Submission Ref. No. NTEC-2019-0093).This is a retrospective review of clinical data and no identifiable information is required. No patient consent to participate the study is required.
: All authors have read the manuscript and consent for its publication.
: The authors declare that they have no competing interests relevant to this article.