Lo, L. Y.
Li, S. W.
Lin, M.
Article History
First Online: 24 March 2017
Compliance with Ethical Standards
:
: This study was not supported by any funding.
: There is no conflict of interest among all the involved authors of this manuscript. All author declare that they have 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.