While we aim to ensure that the information published on this website is accurate and consistent with current knowledge and practice in the NHS, this website is provided for information only. Medical knowledge and practice is constantly evolving and individual cases may require specific advice which cannot be provided through this website.
This website is not intended to replace a consultation with an appropriately qualified health professional.
We cannot guarantee that the information given through this website will meet your health or medical requirements. If you are concerned about your health, please speak to your GP or a health professional.
The content of this site is reviewed annually. The last review took place in April 2014.