1. Department of Chemical Pathology, Midlands State University Medical School, Gweru, Zimbabwe.
2. Department of Chemical Pathology, University of Zimbabwe Medical School, Harare, Zimbabwe.
3. Division of Chemical Pathology, Department of Pathology, University of Witwatersrand/National Health Laboratory Services, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa.
4. Department of Obstetrics and Gynaecology, Midlands State University Medical School, Gweru, Zimbabwe.