Rosenström, Tom http://orcid.org/0000-0001-8277-3776
Ystrom, Eivind
Torvik, Fartein Ask
Czajkowski, Nikolai Olavi
Gillespie, Nathan A.
Aggen, Steven H.
Krueger, Robert F.
Kendler, Kenneth S.
Reichborn-Kjennerud, Ted
Funding for this research was provided by:
National Institute on Drug Abuse (1R01DA037558-01A1)
Norges Forskningsråd (226985)
European Commission (QLG2-CT-2002-01254)
Article History
Received: 9 August 2016
Accepted: 23 December 2016
First Online: 21 January 2017
Compliance with Ethical Standards
:
: Tom Rosenström, Eivind Ystrom, Fartein Ask Torvik, Nikolai Olavi Czajkowski, Nathan A. Gillespie, Steven H. Aggen, Robert F. Krueger, Kenneth S. Kendler, Ted Reichborn-Kjennerud declare that they have no conflict of interest.
: Approval was received from The Norwegian Data Inspectorate and the Regional Committee for Medical and Health Research Ethics, and written informed consent was obtained from all participants after a complete description of the study.
: All procedures performed in studies involving human participants 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.
: Informed consent was obtained from all individual participants included in the study.