1. Division of Infectious Diseases, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
2. Cameroon Baptist Convention Health Services, Yaoundé, Cameroon
3. Department of Health Behavior, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
4. School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
5. Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
6. Department of Health Policy and Organization, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
7. Department of Public Health, Koç University School of Medicine, Istanbul, Turkey