For patients who may be interested in taking part in a clinic trial, first consult your physician. If you then decide to find out more about a specific trial, one resource is ClinicalTrials.gov, a registry of federally and privately supported clinical trials conducted in the United States and around the world. Primary Care Associates of Appleton is not affiliated with this site, which is a service of the U. S. National Institutes of Health, nor do we support or endorse the organization. We are providing this link only as a service.