A closer look at Ambulatory Patient Groups: APG Version 2.0 update.
Hirschl
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D000043:Abstracting and Indexing / Q000592:standards*; D000553:Ambulatory Care / Q000145:classification*; D003953:Diagnosis-Related Groups / Q000145:classification; D004496:Education, Continuing; D006801:Humans; D008499:Medical Records / Q000145:classification*; D014481:United States