Funding for this research was provided by:
Siriraj Research Development Fund
Received: 5 November 2017
Accepted: 9 March 2018
First Online: 27 March 2018
Ethics approval and consent to participate
: The protocol for this study was approved by the Siriraj Institutional Review Board (SIRB), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand (Protocol number 333/2559(EC2), COA no. Si 502/2016). This research is retrospective chart review. We have received permission to use patient information from Director of Siriraj hospital. Informed consent for individual patients has been waived by our IRB, named fully as Siriraj Institutional Review Board, Faculty of Medicine, Siriraj hospital, Mahidol university, Panel 2.
: Not applicable
: The authors declare that they have no personal or professional competing interests, and no financial support from the companies that produce and/or distribute the drugs described in this report.
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