Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (103-2410-H-130 -010 -)
Article History
First Online: 11 February 2019
Compliance with Ethical Standards
:
: Chih-Long Yen declares that he has no conflict of interest. Chung-Ping Cheng declares that he has no conflict of interest. Chin-Lan Huang declares that she has no conflict of interest. Yi-Cheng Lin declares that he has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.