Funding for this research was provided by:
Swedish Federal Government (ALFGBG-716801, ALF 20170019)
Text and Data Mining valid from 2020-02-07
Received: 14 August 2019
Accepted: 5 November 2019
First Online: 7 February 2020
Ethics approval and consent to participate
: The study was approved by the Ethics committee of the Karolinska Institutet, Stockholm, Sweden (2005/554-31/3). All study participants provided oral and written consent to participate after given full information about the study.
: Not applicable.
: The authors declare that they have no competing interest.