100 top hospitals. Clinical research program.
D019985:Benchmarking; D019317:Evidence-Based Medicine; D019538:Health Care Surveys; D006302:Health Services Research / Q000592:standards; D006761:Hospitals / Q000145:classification / Q000592:standards*; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D017751:Safety Management / Q000592:standards; D014481:United States