| William V Padula Improving the quality of pressure ulcer care with prevention: a cost-effectiveness analysisWilliam V Padula Pharmaceutical Outcomes Research Program, University of Colorado, Aurora, CO, USA Med Care 49:385-92. 2011 Building information for systematic improvement of the prevention of hospital-acquired pressure ulcers with statistical process control charts and regressionWilliam V Padula Center for Pharmaceutical Outcomes Research, University of Colorado, Aurora, Colorado, USA BMJ Qual Saf 21:473-80. 2012
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