1. College of Health and Human Services, School of Nursing, University of North Carolina at Charlotte, Charlotte, North Carolina, USA;
2. Department of Psychiatry, Weill Institute for Neurosciences, University of California, San Francisco, California, USA;
3. Health Behavior, San Francisco VA Medical Center, San Francisco, California, USA;
4. Psychology Department, Central Michigan University, Mount Pleasant, Michigan, USA;
5. Department of Mathematics and Statistics, University of North Carolina at Charlotte, Charlotte, North Carolina, USA;
6. Department of Software and Information Systems, University of North Carolina at Charlotte, Charlotte, North Carolina, USA;
7. Addictions Research Program, Mental Illness Research, Education, and Clinical Center (MIRECC), San Francisco VA Health Care System & University of California, San Francisco, California, USA