1. Africa Health Research Institute, University of KwaZulu-Natal, Durban, South Africa;
2. Department of Microbiology and
3. Department of Cardiothoracic Surgery, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa;
4. Department of Pathology and Laboratory Medicine, University of Texas Health Sciences Center at Houston, Houston, Texas;
5. Department of Anatomical Pathology, National Health Laboratory Service, Inkosi Albert Luthuli Central Hospital, Durban, South Africa; and
6. Computed Tomography Scanner Facility, Central Analytical Facilities, Stellenbosch University, Stellenbosch, South Africa
7. Centers for AIDS Research and Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama;