1 Commonwealth Fund Harkness Fellow in Health Care Policy and Practice, Department of Medicine, University of California San Francisco, San Francisco, US (on sabbatical from role as senior policy fellow at the Health Foundation and NHS GP, UK).
2 Professor of Family and Community Medicine, University of California San Francisco, San Francisco, US.
3 Assistant Professor of Family and Community Medicine, University of California San Francisco, San Francisco, US.
4 Director of Policy, the Health Foundation, London, UK.