Funding for this research was provided by:
National Institute on Drug Abuse (R03DA0377860)
National Institute on Alcohol Abuse and Alcoholism (R00AA019974)
Texas Tech University
Received: 18 January 2016
Accepted: 17 June 2016
First Online: 24 June 2016
Compliance with ethical standards
: Jennifer L. Brown, Amelia E. Talley, Andrew K. Littlefield, Nicole K. Gause, declare that they have no conflict of interest.
: All procedures followed were in accordance with ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.