Sverrisson, Ingvar http://orcid.org/0000-0001-5448-0888
Nikberg, Maziar
Chabok, Abbas
Smedh, Kenneth
Funding for this research was provided by:
Uppsala University
Article History
Accepted: 14 January 2018
First Online: 21 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by The Regional Ethics Review Board in Uppsala (No. 2012/558) and followed the principles of the Declaration of Helsinki.
: Informed consent was obtained at the time of inclusion in the registry from all individual participants in the study.