Funding for this research was provided by:
the National Cancer Center Research and Development Fund (29-A-2, 26-A-9)
Text and Data Mining valid from 2019-02-08
Received: 13 October 2018
Accepted: 8 December 2018
First Online: 8 February 2019
Compliance with ethical standards
: The authors 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.