Funding for this research was provided by:
Erasmus Mundus MoveAge project
Text and Data Mining valid from 2020-01-15
Received: 6 March 2019
Accepted: 25 November 2019
First Online: 15 January 2020
Ethics approval and consent to participate
: The local ethics committee (Commissie Medische Ethiek K.U. Leuven) of the KU Leuven (Belgium) approved this study (s56455).
: Informed Consent has been signed by all participants.
: The authors declare that they have no competing interests.