Tufts Medical Center, Boston, Massachusetts, United States
National Institute on Drug Abuse, Biomedical Research Center (BRC), Baltimore, Maryland, United States
National Institutes of Health Clinical Center, 9000 Rockville Pike, Bethesda, Maryland, United States
University of Texas-HSC at Houston, School of Public Health, Houston, Texas, United States
National Institute on Drug Abuse, Biomedical Research Center (BRC), Baltimore, Maryland, United States
National Institute on Drug Abuse, Baltimore, Maryland, United States
National Institute on Drug Abuse, Baltimore, Maryland, United States
Univerisity of Minnesota, Minneapolis, Minnesota, United States
Drug Dependence Research Center, San Fransisco, California, United States
National Institute on Drug Abuse, Baltimore, Maryland, United States