Funding for this research was provided by:
Professor Martti I. Turunen foundation
Mary and Georg C. Ehrnrooth foundation
Text and Data Mining valid from 2019-08-08
Received: 20 March 2019
Accepted: 16 July 2019
First Online: 8 August 2019
Ethics approval and consent to participate
: The local ethics committee approved the study protocol.
: Not applicable
: The authors declare that they have no competing interests.