A clinical trial is
"a formal testing of a specific treatment or other health-related intervention to determine its role in the standard care of individuals with a corresponding medical condition".
Clinical trial. (2018). In Encyclopaedia Britannica. Retrieved from https://academic-eb-com.ezproxy.csu.edu.au/levels/collegiate/article/clinical-trial/488010
Clinical trials can be found in Clinical Trial registries and are also indexed in databases. See the Health page in this guide for a list of locations to search.
Another approach is to employ the Hand Searching technique.