1 Department of Behavioral Science, University of Kentucky, Lexington, KY 40536, United States; Center on Drug Abuse Research Translation (CDART), University of Kentucky, Lexington, KY 40506, United States. Electronic address: thkelly@uky.edu.
2 Department of Psychology, University of Kentucky, Lexington, KY 40506, United States; Center on Drug Abuse Research Translation (CDART), University of Kentucky, Lexington, KY 40506, United States.