Funding for this research was provided by:
Asia University and China medical University (ASIA104-CMUH-17)
Health Promotion Administration, Taiwan (DOH103-HP-1201)
Received: 28 November 2017
Accepted: 22 March 2018
First Online: 2 April 2018
Ethics approval and consent to participate
: Our study was approved by the China Medical University & Hospital Research Ethics Committee (IRB number: CMUH104-REC3–082). As this was a retrospective study using de-identified data, no consent was required.
: Not applicable.
: The authors declare that they have no competing interests.
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