1. Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp 2000
2. Tuberculosis Laboratory, Instituto Nacional de Laboratorios de Salud, La Paz, Bolivia
3. Instituto de Medicina Tropical “Alexander von Humboldt,” Universidad Peruana Cayetano Heredia, Lima 100, Peru
4. Laboratorium voor Microbiologie
5. BCCM/LMG Culture Collection, Universiteit Gent, B-9000 Ghent, Belgium