1. Wadsworth Center, New York State Department of Health, Albany, New York
2. International Laboratory Branch, Global AIDS Program, Centers for Disease Control and Prevention, Atlanta, Georgia
3. University of Kinshasa Teaching Hospital, Kinshasa, Democratic Republic of Congo
4. Unité de la Tuberculose et des Mycobactéries, Institut Pasteur de Guadeloupe, Pointe-à-Pitre, Guadeloupe