Tan, Yanni https://orcid.org/0000-0003-3790-3185
Loganathan, Nivan
Thinn, Kyu Kyu
Liu, Eugene Hern Choon
Loh, Ne-Hooi Will
Article History
Received: 19 April 2018
Accepted: 31 July 2018
First Online: 16 August 2018
Ethics approval and consent to participate
: Approval given by: Institutional review board of National University Hospital (NUH), National Healthcare Group, Singapore.Consent to participate: Approval for waiver of informed consent obtained from the above institution as data was obatined from a pre-exisitng database.Study Reference Number: 2015/00049.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.