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Authors
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Funding
Funding for this research was provided by:
National Medical Research Council (STaR/0015/2013)
National Research Foundation (NRF2016-SOL002-001)
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Article History
First Online: 29 May 2020
Compliance with Ethical Standards
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: The study was approved by National University of Singapore Institutional Review Board and was conducted in accordance with the ethical standards of the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all participants of the study.
: The authors declare that they have no conflict of interest.
