The metaRegister of Controlled Trials (mRCT) and the International Standard Randomised Controlled Trial Number (ISRCTN) Register aim to provide as comprehensive a listing as possible of randomised controlled trials throughout healthcare.
We are keen to encourage collaboration with investigators and organisations in many different countries.
All trial records will be in English; a brief introduction to the mRCT and ISRCTN Register has been prepared in
Spanish, and other languages will be added.
Our links section gives access to more than 250 other online registers of controlled trials, some of which are in languages other than English, for example, German and Dutch.