Ong, Christina http://orcid.org/0000-0001-6543-4334
Lim, Poh Ting
Logarajah, Veena
Liwanag, Maria Janelle
Ang, Bi Xia
Cher, Yuqin
Chiou, Fang Kuan
Kader, Ajmal
Article History
Received: 17 December 2017
Accepted: 13 November 2018
First Online: 12 December 2018
Ethics approval and consent to participate
: The study was approved by the Singhealth Centralised Institutional Review Board. Informed consent was waived by the Singhealth Centralised Instituitional Review Board as this is a retrospective study involving the collection of data from case records.
: Not applicable
: All authors declare no competing interests for work done in this study.
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