title: How Hard Could It Be?
authors: Departments of Radiology and Medical Imaging and Public Health Sciences, University of Virginia, Charlottesville, Virginia. Electronic address: Bjh8a@virginia.edu.
authors: Bruce J
authors: BJ
authors: Hillman
authors: Department of Radiology, University of Michigan, Ann Arbor, Michigan.
authors: Ruth C
authors: RC
authors: Carlos
mesh_terms: D035843:Biomedical Research / Q000458:organization & administration*; D019538:Health Care Surveys / Q000379:methods*; D017063:Outcome Assessment, Health Care / Q000458:organization & administration*; D012107:Research Design; D014481:United States