Funding for this research was provided by:
EU FP7 (603111)
Polish Ministry of Science and Higher Education (3202/7PR/2014/2)
Text and Data Mining valid from 2019-12-01
Received: 7 February 2019
Accepted: 8 November 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: Ethics approval from the relevant ethics committees were obtained in all participating countries as reported in the protocol [CitationRef removed].
: Participants provided consent to publish.
: The authors declare that they have no competing interests.