Changes after publication
This guidance was published in January 2014. Minor changes to the recommendations were made in June 2014 in line with NICE's current wording style, but the starting date relevant for the National Institute for Health and Care Excellence (Constitution and Functions) and the Health and Social Care Information Centre (Functions) Regulations 2013 remains unchanged, which required clinical commissioning groups and NHS England to comply with the recommendations in this appraisal within 3 months of January 2014.