Cochrane protocols are not currently being sent to PROSPERO. This is an ongoing issue with no timeline for a fix. We apologise for any inconvenience. If you have any queries please contact Ursula Gonthier .
PROSPERO, launched in February 2011, is the international prospective register of systematic reviews in health and social care. Led by the Centre for Reviews and Dissemination, University of York, this online database is free to search, and open for free registration to anyone undertaking a systematic review with a health-related outcome.