1. Mycobacteria/Nocardia Research Laboratory, Department of Microbiology, The University of Texas Health Science Center at Tyler, Tyler, Texas, USA
2. Department of Laboratory Medicine, University of Washington, Seattle, Washington, USA
3. Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
4. Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
5. Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Manitoba, Canada