Received: 24 March 2016
Accepted: 7 January 2018
First Online: 17 January 2018
Ethics approval and consent to participate
: This study obtained ethical approval from Deakin University Human Research Ethics Committee of Australia (2012-071) and Institutional Review Board Chang Gung Medical Foundation of Taiwan (CGMF IRB No: 101-0318A3). Prior to commencement, participants gave written informed consent for participation.
: Not applicable.
: The authors declare that they have no competing interest.
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