Funding for this research was provided by:
Swedish Research Council Formas, The Swedish Research Council for Health, Working Life and Welfare, and The Swedish Research Council-Vetenskapsrådet (259-2012-48)
Text and Data Mining valid from 2018-10-12
Received: 5 February 2018
Accepted: 8 October 2018
First Online: 12 October 2018
Compliance with ethical standards
: All authors declare that they have no conflict of interest.