Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST104-2321-B-002-058)
the Ministry of Health and Welfare (MOHW105-CDC-C-114-00103, MOHW106-CDC-C-11400104)
Received: 13 November 2018
Accepted: 18 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: The Institutional Review Board of National Taiwan University Hospital approved the study (NTUH REC No.: 201606086RINA) and waved the need for informed consent because this retrospective study used encrypted data and did not add any risk to the participants.
: Not applicable.
: All authors declare that no competing interests exist. The corresponding author, Dr. Jann-Yuan Wang, is a member of the editorial board of the journal of BMC Infectious Diseases.