The study involves the recruitment of research participants who are randomized to receive one of two approved drugs. This webpage provides guidance to UW researchers designing, and HSD and IRB members evaluating, Diversity Plans for clinical trials.A research study involving human volunteers (also called participants) that is intended to add to medical knowledge. Clinical trials can take place in different locations, but often take place at hospitals, universities, doctors' offices, or community clinics. University of Washington offers a certificate program in clinical trials, with flexible evening and weekend classes to fit your schedule. Reaching Out to Recruit for Clinical Trials. SACHRP Recommendation. New Challenges in Interactions among Sponsors, Clinical Trial Sites, and Study Subjects. Phase 2 is the first step to find out if a new treatment really works. Phase 2 trials include more people.