title: Oxford tests the hypothesis that excellent plus  excellent is more than twice as good.
authors.forename: Barry
authors.initials: B
authors.lastname: Shurlock
mesh_terms: D002300:Cardiac Care Facilities / Q000458:organization & administration / Q000592:standards; D002309:Cardiology / Q000458:organization & administration / Q000592:standards*; D004739:England; D006801:Humans; D012106:Research / Q000191:economics / Q000458:organization & administration; D012109:Research Support as Topic