Dealing with medical practice variations: a proposal for action. ReViews.
D003256:Community Participation; D003953:Diagnosis-Related Groups; D006076:Government; D006279:Health Maintenance Organizations; D006296:Health Services / Q000706:statistics & numerical data*; D006300:Health Services Misuse; D006801:Humans; D010820:Physicians; D012955:Societies, Medical; D014481:United States