Funding for this research was provided by:
Ministry of Health and Welfare (# DOH100-TD-M-113-100007(1 of 2) and DOH101-TD-M-113-100007(2 of 2))
Received: 17 September 2018
Accepted: 11 July 2019
First Online: 18 July 2019
Ethics approval and consent to participate
: The Ethics Committee of Taipei Medical University approved the study protocol (approval number TMU201012008). Informed written and oral consent was obtained from all participants prior to participation in the study.
: Not applicable.
: The authors declare that they have no competing interests.