This guideline was due to publish on 25 March 2020.
During this period of emergency, NICE has adapted its priorities to support the NHS, local authorities and the wider health and social care sector. The stakeholders and advisory committees involved in the development of our guidelines include a large number of frontline staff. We know that their priority in this crisis is caring for patients. For this reason, we have cancelled all guideline committee meetings and will not be publishing any draft or final guidelines until further notice (except for rapid guidelines – see the link in the yellow banner at the top of this page). At present we are not able to confirm the revised publication date for this guideline.