Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST-106-2314-B-002-134-MY2 and MOST-104-2314-B-002-107-MY2)
Health Promotion Administration, the Ministry of Health and Welfare, Taipei, Taiwan (A1051011)
Received: 13 March 2019
Accepted: 18 July 2019
First Online: 13 August 2019
Ethics approval and consent to participate
: This study was approved by the Koo Foundation Sun-Yat Sen Cancer Center Research Ethnics Committee (20171016A).
: Not applicable.
: The authors declare that they have no competing interests