Funding for this research was provided by:
FP7 Health (278186)
National Institute for Health Research (-)
Science Without Borders (233850/2014-7)
Text and Data Mining valid from 2018-06-18
Received: 16 November 2017
Accepted: 4 June 2018
First Online: 18 June 2018
Ethics approval and consent to participate
: The study was approved by the corresponding local ethics committees of participating countries and all participants provided informed consent.
: The authors declare that they have no competing interests.
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