<P> The term diagnostic criteria designates the specific combination of signs, symptoms, and test results that the clinician uses to attempt to determine the correct diagnosis . </P> <P> Some examples of diagnostic criteria, also known as clinical case definitions, are: </P> <Ul> <Li> Amsterdam criteria for hereditary nonpolyposis colorectal cancer </Li> <Li> McDonald criteria for multiple sclerosis </Li> <Li> ACR criteria for systemic lupus erythematosus </Li> <Li> Centor criteria for strep throat </Li> </Ul> <Li> Amsterdam criteria for hereditary nonpolyposis colorectal cancer </Li>

Who introduced the art of treating an illness with one medication at a time