About the Authors

Ute Feucht

Contributed equally to this work with: Ute Feucht, Helen Mulol

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

ute.feucht@up.ac.za.

Affiliations Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria, South Africa, Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria, South Africa, Department of Paediatrics, University of Pretoria, Pretoria, South Africa

Helen Mulol

Contributed equally to this work with: Ute Feucht, Helen Mulol

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

Affiliations Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria, South Africa, Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria, South Africa, Department of Paediatrics, University of Pretoria, Pretoria, South Africa

Valerie Vannevel

Roles Data curation, Investigation, Methodology, Project administration, Writing – review & editing

Affiliations Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria, South Africa, Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria, South Africa, Department of Obstetrics and Gynaecology, University of Pretoria, Pretoria, South Africa

Robert Pattinson

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

Affiliations Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria, South Africa, Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria, South Africa, Department of Obstetrics and Gynaecology, University of Pretoria, Pretoria, South Africa

Competing Interests

RP received funding for the South African Medical Research Council (SAMRC) Research Unit and the Council for Scientific and Industrial Research (CSIR) provided the equipment for the study. We have read and understood your journal’s policies, and we believe that neither the manuscript nor the study violates any of these. There are no conflicts of interest to declare.