1. National HIV and Retrovirology Laboratory, JC Wilt Infectious Disease Research Centre, Public Health Agency of Canada, Winnipeg, Canada.
2. Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Canada.
3. Fenway Health and Harvard Medical School, Boston, Massachusetts.
4. Mass Spectrometry and Proteomics Core Facility, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Canada.
5. HIV Center for Clinical and Behavioral Studies, Columbia University, New York, New York.
6. University of Puerto Rico, San Juan, Puerto Rico.
7. Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
8. Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.