1. Department of Pharmaceutical Sciences, College of Pharmacy and Allied Health Professions; St. John's University; Jamaica New York 11439
2. Psychology Department; Furman University; Greenville South Carolina 29613
3. Indivior PLC; 10710 Midlothian Turnpike; Suite 430 Richmond, VA U.S.A. 2323
4. Neuropsychopharmacology Section, Molecular Targets and Medication Discovery Branch, Intramural Research Program; National Institute on Drug Abuse, National Institutes of Health; Baltimore Maryland 21224