TRIP Database (Turning Research Into Practice, Free basic version): a clinical search engine designed to help clinicians identify the best available evidence with which to answer clinical questions.
PDQ (Physician Data Query): NCI's Comprehensive Cancer Database - Free Resource. The PDQ cancer information summaries are from the National Cancer Institute (NCI) written for physicians and patients. They are peer-reviewed, evidence-based summaries on topics including adult and pediatric cancer treatment, supportive and palliative care, screening, prevention, genetics, and complementary and alternative medicine.
EPC Evidence-Based Reports from AHRQ (Agency for Healthcare Research & Quality)
EPC Reports offer comprehensive, science-based information on common costly medical conditions and new health care technologies and strategies. Your search results cover complete titles of released evidence reports, comparative effectiveness reviews, technical briefs, Technology Assessment Program reports, and U.S. Preventive Services Task Force evidence syntheses.