1 François Dabis is the director of the French Research Agency on HIV and Viral Hepatitis (ANRS), Paris, France. francois.dabis@anrs.fr.
2 Linda-Gail Bekker is the president of the International AIDS Society (IAS), Geneva, Switzerland, and co-chair of the IAS 2017 conference in Paris. linda-gail.bekker@hiv-research.org.za.