Funding for this research was provided by:
National Institute on Drug Abuse (DA043204, DA011792)
National Institute on Alcohol Abuse and Alcoholism (AA016179)
Article History
Received: 20 September 2019
Accepted: 27 December 2019
First Online: 11 January 2020
Compliance with ethical standards
: Research protocols were approved by the Institutional Animal Care and Use Committee at Harvard Medical School.
: The authors declare that they have no conflict of interest.