Health Library Guide to finding Grey Literature

A database of privately and publicly funded clinical studies conducted around the world.

Fosters scientific excellence in the evaluation and supervision of medicines, for the benefit of public and animal health in the European Union (EU).

Search for protocol and results information on: interventional clinical trials conducted in the European Union (EU) & the European Economic Area (EEA), and clinical trials conducted outside the EU / EEA that are linked to European paediatric-medicine development.

A primary clinical trial registry that accepts all clinical research studies whether proposed, ongoing or completed. Recognised by WHO and ICMJE

Produced by BMJ, Yale & Cold Spring Harbor Labs

Provides access to reports, data, and analyses of NIH research activities, including the results of NIH-supported research.

A linked database for all the available information, on every trial ever conducted. Provided by the Open Knowledge Foundation.

This registry has been created to ensure that a complete view of clinical research is accessible to all those involved in health care decision making.