Grey Literature

The ANZCTR is an online registry of clinical trials being
undertaken in Australia, New Zealand and elsewhere.

ClinicalTrials.gov is a database of privately and publicly funded clinical studies conducted around the world.

A bibliographic database that provides a highly concentrated source of reports of randomized controlled trials. Records contain the list of authors, the title of the article, the source, volume, issue, page numbers, and, in many cases, a summary of the article (abstract). Access is not available outside Australia.

Allows users to search, register and share information about randomised controlled trials.

The NCIC Clinical Trials Group is a cooperative oncology group which carries out clinical trials in cancer therapy, supportive care and prevention across Canada and internationally.

Provides part of the infrastructure that allows high-quality clinical research to take place in the NHS

The main aim of the WHO ICTRP is to facilitate the prospective registration of the WHO Trial Registration Data Set on all clinical trials, and the public accessibility of that information.