Funding for this research was provided by:
Jan Wallanders och Tom Hedelius Stiftelse samt Tore Browaldhs Stiftelse
Text and Data Mining valid from 2018-05-29
Received: 11 October 2016
Accepted: 10 May 2018
First Online: 29 May 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.