1. Co-Director, Social Interventions Research and Evaluation Network (SIREN), Center for Health and Community, University of California, San Francisco, San Francisco, California, USA
2. Researcher, Department of Family and Community Medicine, University of California, San Francisco, San Francisco, California, USA
3. Assistant Professor, Department of Family and Community Medicine and Philip R. Lee Institute for Health Policy Studies, University of California, San Francisco, San Francisco, California, USA