1. Division of Infectious Diseases, Johns Hopkins University, Baltimore, Maryland, USA
2. Departments of Epidemiology, Global Health, and Center for AIDS and STD, University of Washington, Seattle, Washington, USA
3. Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
4. Departments of Medicine, Epidemiology and Microbiology, University of Alabama, Birmingham, Birmingham, Alabama, USA
5. UCLA Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
6. Hologic, Inc., San Diego California, USA