| Sanjay A Patel Activity monitoring and energy expenditure in COPD patients: a validation studySanjay A Patel Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, USA COPD 4:107-12. 2007 Optimal protocol selection for cardiopulmonary exercise testing in severe COPDRoberto P Benzo Division of Pulmonary and Critical Care Medicine, University of Pittsburgh, Suite 1211 Kaufmann Building, 3471 Fifth Ave, Pittsburgh, PA 15213, USA Chest 132:1500-5. 2007 Relationship between pathologic characteristics of peripheral airways and outcome after lung volume reduction surgery in severe chronic obstructive pulmonary diseaseFrank C Sciurba Division of Pulmonary and Critical Care Medicine, Emphysema Research Center, University of Pittsburgh, Suite 1211, 3471 Fifth Avenue, PA 15213, USA Proc Am Thorac Soc 3:533-4. 2006 Emerging concepts in outcome assessment for COPD clinical trialsSanjay A Patel Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, 3471 Fifth Avenue, Pittsburgh, PA 15213, USA Semin Respir Crit Care Med 26:253-62. 2005 Relative utility of 6-minute walk vs. incremental shuttle walk: does it depend upon functional status?Sanjay A Patel Respiration 72:331; author reply 332. 2005 Survival after lung volume reduction in chronic obstructive pulmonary disease: insights from small airway pathologyJames C Hogg University of British Columbia iCAPTURE Centre for Cardiovascular and Pulmonary Research, St Paul s Hospital, Vancouver, BC, Canada Am J Respir Crit Care Med 176:454-9. 2007
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