Diagnosis-related groups: a twentieth-century nosology.
Gupta
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Orthopedic Department, St. Francis Regional Medical Center, Wichita, Kansas 67214.
D002965:Classification; D003953:Diagnosis-Related Groups; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049673:History, 20th Century; D049690:History, Ancient