1. Department of Clinical Microbiology, Ampath National Laboratory Services, Milpark Hospital, Parktown, Johannesburg, South Africa.
2. Department of Clinical Microbiology, Ampath National Referral Laboratory, Centurion, Pretoria, South Africa.
3. Department of Clinical Microbiology, Ampath National Laboratory Services, Johannesburg, South Africa.
4. Department of Clinical Microbiology, Pathcare Reference Laboratory, Cape Town, South Africa.
5. International Health Management Associates, Inc., Schaumburg, Illinois.
6. Sandton Clinic, Sandton and University of Witwatersrand, Charlotte Maxeke Hospital, Johannesburg, South Africa.
7. Department of Critical Care, Charlotte Maxeke Johannesburg Academic Hospital and University of Witwatersrand, Johannesburg, South Africa.
8. Division of Pulmonology, Department of Medicine, Charlotte Maxeke Johannesburg Academic Hospital and University of Witwatersrand, Johannesburg, South Africa.
9. Department of Surgery, Charlotte Maxeke Johannesburg Academic Hospital and University of Witwatersrand, Johannesburg, South Africa.
10. Department of Critical Care, Groote Schuur Hospital, and University of Cape Town, Cape Town, South Africa.
11. Department of Critical Care, Steve Biko Academic Hospital, and University of Pretoria, Pretoria, South Africa.