The Nuffield Trust is an independent health charity. We aim to improve the quality of health care in the UK by providing evidence-based research and policy analysis and informing and generating debate. Our vision is to help achieve a high quality health and social care system that improves the health and care of people in the UK. We aim to help provide the evidence base for better health care through four key activities: conducting cutting edge research and influential analysis; informing and generating debate; supporting leaders; and examining international best practice. Find out more by visiting the Nuffield Trust website at: http://www.nuffieldtrust.org.uk, or by following us on Twitter: http://www.twitter.com/NuffieldTrust. You can also subscribe for our newsletter and regular email updates to be the first to hear about our latest research and analysis, updates on key research projects, video interviews with UK and international health leaders, blogs from our experts, latest events and interactive data visualisations: http://www.nuffieldtrust.org.uk/newsletter.