1. University of the Sciences Substance Use Disorders Institute, Philadelphia, PA, USA;
2. Kennesaw State University, Kennesaw, GA, USA;
3. University of Oregon, Eugene, OR, USA;
4. University of Georgia, Athens, GA, USA;
5. Pennsylvania State University, State College, PA, USA;
6. Georgia Southern University, Statesboro, GA, USA;
7. Texas Tech University, Lubbock, TX, USA;
8. Georgia Health Policy Center, Georgia State University, Atlanta, GA, USA;
9. North Carolina State University, Raleigh, NC, USA;
10. University of Michigan, Ann Arbor, MI, USA