About the Authors
Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
Health Economics Unit, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
Aids for AIDS, Medscheme, Cape Town, South Africa
Department of Statistical Sciences, University of Cape Town, South Africa
The authors have declared that no competing interests exist.
ICMJE criteria for authorship read and met: RL SC MH AD LR FL GM. Agree with the manuscript's results and conclusions: RL SC MH AD LR FL GM. Designed the experiments/the study: RL GM. Analyzed the data: RL MH AD FL. Collected data/did experiments for the study: MH. Wrote the first draft of the paper: RL. Contributed to the writing of the paper: SC MH AD LR FL GM. Ccontributed to the overall study design and methodology: SC. Collection and preparation of data used in the study: MH. Provided input into data analysis methodology: MH. Statistical consultant to the revision of this paper: FL. Reviewed various drafts of the paper: FL.