About the Authors

Thomas M. Rehle

TRehle@hsrc.ac.za

Affiliation Human Sciences Research Council, Cape Town, South Africa

Timothy B. Hallett

Affiliation Imperial College London, London, United Kingdom

Olive Shisana

Affiliation Human Sciences Research Council, Cape Town, South Africa

Victoria Pillay-van Wyk

Affiliation Human Sciences Research Council, Cape Town, South Africa

Khangelani Zuma

Affiliation Human Sciences Research Council, Cape Town, South Africa

Henri Carrara

Affiliation Human Sciences Research Council, Cape Town, South Africa

Sean Jooste

Affiliation Human Sciences Research Council, Cape Town, South Africa

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TMR TH OS VPvW KZ HC SJ. Performed the experiments: TMR TH VPvW KZ HC. Analyzed the data: TMR TH OS VPvW KZ HC SJ. Contributed reagents/materials/analysis tools: TMR TH OS VPvW KZ HC SJ. Wrote the paper: TMR TH OS VPvW KZ HC SJ.