1. Department of Epidemiology, School of Public Health, University of Washington, Seattle, Washington, USA
2. Department of Health Systems and Population Health, School of Public Health, University of Washington, Seattle, Washington, USA
3. Addictions, Drug & Alcohol Institute, Department of Psychiatry and Behavioral Sciences, School of Medicine, University of Washington, Seattle, Washington, USA
4. HIV/STI/HCV Program, Public Health-Seattle & King County, Seattle, Washington, USA
5. Department of Emergency Medicine, School of Medicine, University of Washington, Seattle, Washington, USA
6. Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA