Text and Data Mining valid from 2018-12-01
Received: 6 October 2018
Accepted: 14 November 2018
First Online: 3 December 2018
Ethics approval and consent to participate
: Ethical approval was given by the first author’s (Singapore General Hospital) Institutional Review Board and all data was de-identified and analysed on password-protected computers. Consent was not obtained because information was anonymized and de-identified prior to analysis as per National Registry of Diseases Office protocol.
: Not applicable.
: The authors declare that they have no competing interests.
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