Funding for this research was provided by:
General Research Fund of the Research Grants Council of Hong Kong (449312)
Article History
Received: 26 February 2020
Accepted: 7 August 2020
First Online: 14 August 2020
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: The present study has obtained clinical research ethics approval from the authors’ institution and hospitals’ clinical ethics committees and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.