Some details were not included in the original financial disclosure.

The full financial disclosure should read as follows:

The author is supported by the Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa, which forms part of the Comprehensive International Program on AIDS, funded by the US National Institute of Allergy and Infectious Diseases. The author is also supported by the Ethical, Social, and Cultural Program for Global Health at the Sandra Rotman Centre, which receives funding from the Bill & Melinda Gates Foundation, and by the HIV Prevention Trial Network (HPTN). No specific funding was received for writing this article and the views of the author do not necessarily represent the views of his employers or sponsors.