Cristiani, Riccardo http://orcid.org/0000-0002-3286-4060
Engström, Björn
Edman, Gunnar
Forssblad, Magnus
Stålman, Anders
Article History
Received: 12 January 2018
Accepted: 11 July 2018
First Online: 17 July 2018
Compliance with ethical standards
:
: Each author declares that no possible conflict of interest (financial or non-financial) exist in connection with this study.
: The study was approved by the Regional Ethics Commitee, Karolinska Institutet, Diarie number: 2016/1613-31/2.
: For this type of study, formal consent is not required.