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Authors
Han, Jinghao
Choi, Yue Kwan
Leung, Wing Kit
Hui, Ming Tung
Leung, Maria Kwan Wa http://orcid.org/0000-0001-7652-1759
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Article History
Received: 23 July 2020
Accepted: 16 July 2021
First Online: 7 August 2021
Compliance with ethical standards
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: The study was a retrospective cohort study. The study protocol was approved by The Joint Chinese University of Hong Kong – New Territories East Cluster Clinical Research Ethics Committee (Reference No. 2019.252) under expedited review with waiver of informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
