1. Department of Blood-borne Infections; Sanquin Research; Amsterdam the Netherlands
2. Stichting HIV Monitoring; Amsterdam the Netherlands
3. Laboratory for Clinical and Epidemiological Virology, Department of Microbiology and Immunology; Rega Institute for Medical Research, KU Leuven-Leuven University; Leuven Belgium
4. AIDS Reference Laboratory; University Hospitals Leuven; Leuven Belgium
5. Blood Service, Belgian Red Cross-Flanders; Mechelen Belgium
6. AIDS Reference Center, University Hospitals Leuven; Leuven Belgium
7. Laboratory for Clinical Infectious and Inflammatory Disorders, Department of Microbiology and Immunology; KU Leuven-Leuven University; Leuven Belgium
8. Department of Medical Microbiology; Leiden University Medical Centre; Leiden the Netherlands
9. Department of Molecular Biology; MC Slotervaart; Amsterdam the Netherlands
10. Center for Global Health and Tropical Medicine; Microbiology Unit, Institute for Hygiene and Tropical Medicine, University Nova de Lisboa; Lisbon Portugal
11. Faculty of Medicine and Health Sciences; Ghent University; Ghent Belgium
12. Department of Medical Microbiology (CINIMA); Academic Medical Center/University of Amsterdam; Amsterdam the Netherlands