Karlsson, Sune http://orcid.org/0000-0003-0203-4688
Österholm, Pär http://orcid.org/0000-0002-4840-7649
Article History
Received: 26 June 2018
Accepted: 15 July 2019
First Online: 20 July 2019
Compliance with ethical standards
:
: None of the authors has any conflicts of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.