Funding for this research was provided by:
Text and Data Mining valid from 2018-10-26
Received: 26 January 2018
Accepted: 16 October 2018
First Online: 26 October 2018
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the ethics committee of the National Hospital of Tropical Diseases in Hanoi, Vietnam (Approval No: 69/HDDD-NDTU). Informed consent was waived due to the retrospective nature of the study. All patient data were anonymised prior to the analysis.
: Not applicable.
: HRvD is a member of the editorial board (Associate Editor) of the BMC Infectious Diseases. The authors otherwise declare that they have no competing interests.
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