1. Uniformed Services University of the Health Sciences, Bethesda, MD, USA
2. Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
3. Rutgers University, New Brunswick, NJ, USA
4. University of Michigan, Ann Arbor, USA
5. National Institute on Drug Abuse, National Institutes of Health, Bethesda, MD, USA
6. University of Central Florida, Orlando, USA