1. Tuberculosis Control Program, Public Health,– Seattle & King County, Washington, USA
2. Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, Washington, USA
3. Tuberculosis Program, Office of Communicable Disease Epidemiology, Washington State Department of Health, Tumwater, Washington, USA
4. Division of Tuberculosis Elimination, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA