Funding for this research was provided by:
Seventh Framework Cordis FP7 (245200)
Text and Data Mining valid from 2018-10-20
Received: 10 July 2018
Accepted: 28 September 2018
First Online: 20 October 2018
Compliance with ethical standards
: The authors declare that they have no competing interests
: 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.