1. Program Design & Evaluation Services, Multnomah County Health Department, Portland, Oregon.
2. Health and Disability Working Group, Boston University School of Public Health, Boston, Massachusetts.
3. Center for Public Policy and School of Public Health, Virginia Commonwealth University, Richmond, Virginia.
4. The Fenway Institute of Fenway Community Health, Boston, Massachusetts.
5. Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts.
6. Department of Medicine and Public Health, University of California, Los Angeles, Los Angeles, California.