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Authors
Wang, Chuan
Li, Vivian Wing-yi
So, Edwina Kam-fung
Cheung, Yiu-fai https://orcid.org/0000-0002-7279-4992
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Article History
Received: 6 August 2019
Accepted: 22 January 2020
First Online: 1 February 2020
Compliance with Ethical Standards
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: All of the authors declare no conflict of interest.
: The review of clinical records, without additional procedures performed in patients and the need to obtain informed consent, was approved by the Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster, Hong Kong, China, and in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
