Hee, Owen Kim
Thng, Zheng-Xian
Zhu, Hong-Yuan
Lamoureux, Ecosse Luc
Article History
Received: 16 August 2017
Accepted: 30 May 2018
First Online: 14 August 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Singapore National Healthcare Group (reference number 2014/00370). All the participants signed the informed consent form.
: The authors declare that they have no competing interests.
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