... > social science subjects > health and social care > health care management > pharmaceuticals and clinical trials > clinical trials > multicenter studies as topic

... > contexts > population characteristics > health > public health > epidemiologic methods > epidemiologic study characteristics as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health sciences > physiology > physiological processes > health and aging > studies of aging > clinical trials > multicenter studies as topic

... > other subjects > natural sciences > life sciences > biological sciences > physiology > physiological processes > health and aging > studies of aging > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > physiology > physiological processes > health and aging > studies of aging > clinical trials > multicenter studies as topic

... > other subjects > natural sciences > life sciences > biological sciences > biology > physiology > physiological processes > health and aging > studies of aging > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health and society > cancer and society > treatments and therapies > clinical trials > multicenter studies as topic

... > contexts > population characteristics > health > public health > epidemiology > medical care and research > clinical trials > multicenter studies as topic

... > social science subjects > criminology and criminal justice > criminology > law enforcement > investigation techniques > investigative techniques > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > criminology and criminal justice > criminology > white-collar and corporate crime > criminology and justice > investigation techniques > investigative techniques > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health care quality, access, and evaluation > quality of health care > health care evaluation mechanisms > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health policy > health services > health service administration > quality of health care > health care evaluation mechanisms > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health services > health service administration > quality of health care > health care evaluation mechanisms > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health care management > health care facilities, manpower, and services > health services > health service administration > quality of health care > health care evaluation mechanisms > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health occupations > health service administration > quality of health care > health care evaluation mechanisms > evaluation studies as topic > clinical trials > multicenter studies as topic

... > social science subjects > health and social care > health care quality, access, and evaluation > health services research > quality and safety of care > quality of health care > health care evaluation mechanisms > evaluation studies as topic > clinical trials > multicenter studies as topic