Funding for this research was provided by:
H2020 European Institute of Innovation and Technology (633595)
Text and Data Mining valid from 2019-07-01
Received: 22 February 2019
Accepted: 13 May 2019
First Online: 1 July 2019
Ethics approval and consent to participate
: All studies were approved by their local ethics committees, and participants or their guardians provided written consent prior to the study.
: Not applicable.
: The authors declare that they have no competing interests.