The ISRCTN (International Standard Randomised Controlled Trial Number) registers all clinical research studies (proposed, ongoing or completed) and provides each one with a unique identifying number. All study records in the database are searchable and freely accessible.
U.S. National Institutes of Health registry and results database of publicly and privately supported clinical studies of human participants conducted around the world. A list of which databank sources are included in the Medline database can be viewed here: http://www.nlm.nih.gov/bsd/medline_databank_source.html
Search for protocol and results information on interventional clinical trials conducted in the European Union (EU) and the European Economic Area (EEA); and those conducted outside the EU / EEA that are linked to European paediatric-medicine development.
An open, online database of information about the world’s clinical research trials. Matches documents and data for each trial including registry entries, papers, regulatory documents; methods and results; researchers, clinical study reports, and more.