Topor, Alain
Stefansson, Claes-Göran
Denhov, Anne
Bülow, Per
Andersson, Gunnel
Funding for this research was provided by:
Forskningsr?det om H?lsa, Arbetsliv och V?lf?rd (2014-0117)
Article History
Received: 4 August 2018
Accepted: 7 January 2019
First Online: 10 January 2019
Compliance with ethical standards
:
: The study was approved by The Regional Ethical Review Board in Stockholm in 2005 (ref. 2005/2: 1) in 2009 (ref. 2009/806-2) and in 2015 (ref 2015/1155-32).
: The authors declare that they have no conflicts of interest.