Article History
Received: 30 January 2019
Accepted: 23 April 2019
First Online: 8 May 2019
Compliance with ethical standards
:
: None to report.
: The original study received approval from the regional ethical review board at Linköping University Dnr 2011/41-31. For the subanalysis of the actual study, no approval was needed, because the persons were deceased. However, the regional ethical review board at Linköping University gave an advisory opinion Dnr 2017/229-31 and found nothing to object to.
: All the patients had given their informed consent for participation in the original RCT according to the Helsinki declaration.