aDepartment of HIV/AIDS, World Health Organization, Geneva, Switzerland
bMédecins Sans Frontières
cCentre for Infectious Disease Epidemiology and Research, University of Cape Town
dWestern Cape Department of Health, Cape Town, South Africa.
Correspondence to Nathan Ford, Dept HIV/AIDS, World Health Organization, 20 Avenue Appia, 1211 Geneva, Switzerland. E-mail: firstname.lastname@example.org
Received 11 March, 2014
Revised 5 July, 2014
Accepted 7 July, 2014