Kendler, Kenneth S. http://orcid.org/0000-0001-8689-6570
Ohlsson, Henrik
Lichtenstein, Paul
Sundquist, Jan
Sundquist, Kristina
Funding for this research was provided by:
National Institute on Drug Abuse (DA030005)
National Institute on Alcohol Abuse and Alcoholism (AA023534)
Article History
Received: 11 May 2018
Accepted: 16 November 2018
First Online: 8 December 2018
Compliance with ethical standards
:
: Kenneth S. Kendler, Henrik Ohlsson, Paul Lichtenstein, Jan Sundquist and Kristina Sundquist declares that they have no conflict of interest.
: 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. We secured ethical approval for this study from the Regional Ethical Review Board of Lund University. There were no animals used in this study.
: Informed consent was not obtained from individual participants included in the study as we were working with anonymized data.