Poelemeijer, Youri Q. M. http://orcid.org/0000-0003-1042-8011
Liem, Ronald S. L.
VĂ¥ge, Villy
Mala, Tom
Sundbom, Magnus
Ottosson, Johan
Nienhuijs, Simon W.
Funding for this research was provided by:
Leiden University Medical Center
Article History
First Online: 19 July 2018
Compliance with Ethical Standards
: All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interest.
: For this retrospective type of study, formal consent is not required.
: Informed consent was obtained from all individual Norwegian participants included in this study. Informed consent from Dutch and Swedish participants was not required under Dutch and Swedish law.