'Friendly competition' lowers costs.
D019643:Arthroplasty, Replacement / Q000191:economics* / Q000706:statistics & numerical data; D003363:Cost Control / Q000379:methods; D004465:Economic Competition; D020445:Hospitalists; D006801:Humans; D007595:Joint Prosthesis / Q000191:economics* / Q000706:statistics & numerical data; D009820:Ohio