Funding for this research was provided by:
Stockholms Läns Landsting (ALF LS 1411-1372)
Stiftelsen för Strategisk Forskning (SSF ICA-120063)
Text and Data Mining valid from 2018-12-12
Received: 2 July 2018
Revised: 29 November 2018
Accepted: 2 December 2018
First Online: 12 December 2018
Compliance with ethical standards
: All authors declare that they have no conflict of interest.
: The study was approved by the regional human subject research ethics review board.
: All patients provided written informed consent.