1. Division of Infectious Diseases, Department of Medicine, School of Medicine, University of Alabama at Birmingham (UAB), Birmingham, AL, USA
2. Haverford College, Haverford, PA, USA
3. Division of Adolescent Medicine, Department of Pediatrics, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
4. School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
5. Department of Health Behavior, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA