1. Department of Psychology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
2. Division of HIV, ID and Global Medicine, Department of Medicine, University of California, San Francisco, San Francisco, California, USA.
3. Division of Prevention Science, Department of Medicine, University of California, San Francisco, San Francisco, California, USA.
4. Division of Infectious Diseases, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.
5. Department of Health Care Organization and Policy, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, USA.