1 Wits Ezintsha, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa. Electronic address: [email protected].
2 Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, USA.
3 Medicines Patent Pool, Geneva, Switzerland.
4 HIV/AIDS Unit, Division of Infectious Diseases, Geneva University Hospitals, Geneva, Switzerland.
5 Wits Ezintsha, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa.