1. Department of Health Behavior, School of Public Health, University of Alabama, Birmingham, AL, USA
2. Division of Infectious Diseases, School of Medicine, University of Alabama, Birmingham, AL, USA
3. Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, CT, USA
4. Department of Epidemiology, School of Public Health, University of Zambia, Lusaka, Zambia
5. Department of Psychiatry, School of Medicine, University of Alabama, Birmingham, AL, USA
6. Department of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL, USA
7. Department of Nursing, University of Massachusetts, Boston, MA, USA
8. Department of Biostatistics, School of Public Health, University of Alabama, Birmingham, AL, USA