Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.




The POWER study is funded and supported by the NIHR Applied Research Collaboration Oxford and Thames Valley (ARC OxTV) and the NIHR Oxford Biomedical Research Centre (BRC).

Visit and to find out more.

This project was reviewed by, and received ethics clearance through, the University of Oxford Central University Research Ethics Committee (reference number R67215/RE002).