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Contributors AB and GW wrote the manuscript.
Funding AB has received grants from the French National Agency for Research on AIDS and Viral Hepatitis (ANRS) and Sidaction. GW is supported by a Professorship from the Swiss National Science Foundation [PP00P3_176944].
Competing interests None declared.
Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.
Patient consent for publication Not required.
Provenance and peer review Commissioned; internally peer reviewed.
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