1. Division of Medical Microbiology, Department of Pathology, Stellenbosch University, Cape Town, South Africa.
2. National Health Laboratory Service, Tygerberg Hospital, Cape Town, South Africa.
3. Institute for Infection Prevention and Hospital Epidemiology, Medical Center University of Freiburg, Freiburg, Germany.
4. Department of Medical Microbiology, University of the Free State, Bloemfontein, South Africa.
5. National Health Laboratory Service, Universitas Hospital, Bloemfontein, South Africa.