About the Authors

Bala Waziri

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Writing – original draft, Writing – review & editing

balawaziri@gmail.com

Affiliations School of Public Health, University of the Witwatersrand, Johannesburg, South Africa, Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, Department of Medicine, Ibrahim Badamasi Babangida Specialist Hospital, Minna, Nigeria

Eustasius Musenge

Roles Conceptualization, Data curation, Formal analysis, Methodology, Supervision, Writing – original draft, Writing – review & editing

Affiliation School of Public Health, University of the Witwatersrand, Johannesburg, South Africa

Raquel Duarte

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Resources, Supervision, Writing – original draft, Writing – review & editing

Affiliation Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Caroline Dickens

Roles Conceptualization, Formal analysis, Investigation, Methodology, Resources, Writing – original draft, Writing – review & editing

Affiliation Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Therese Dix-Peek

Roles Conceptualization, Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Vakhtang Rekhviashvili

Roles Conceptualization, Data curation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Renal Unit, Donald Gordon Medical Center, University of the Witwatersrand, Johannesburg, South Africa

Graham Paget

Roles Conceptualization, Methodology, Writing – original draft, Writing – review & editing

Affiliation Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Saraladevi Naicker

Roles Conceptualization, Funding acquisition, Methodology, Supervision, Writing – original draft, Writing – review & editing

Affiliation Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Competing Interests

This study was funded by the AstraZeneca Research Trust Fund (ACWAZ1) to Dr Bala Waziri. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. There are no patents, products in development or marketed products associated with this research to declare. This does not alter our adherence to PLOS ONE policies on sharing data and materials.