Text and Data Mining valid from 2018-07-24
First Online: 24 July 2018
Compliance with Ethical Standards
: The authors declare that they have no conflicts of interest.
: The CATSS 9/12 study is based on voluntary, informed consent participation and has ethical approval from the Karolinska Institute Ethical Review Board: Dnr 03-672 and 2010/507-31/1.