1. Northwestern University, Chicago, Illinois
2. Harvard T. H. Chan School of Public Health, Boston, Massachusetts
3. Ohio State University, Columbus, Ohio
4. Johns Hopkins University, Baltimore, Maryland
5. Columbia University, New York, New York
6. University of Alabama at Birmingham and ViiV Healthcare, Birmingham, Alabama
7. University of California, San Diego, San Diego, California
8. University of Colorado, Aurora, Colorado, USA.