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Subpopulations and intermediate outcome measures in COPD study
Clinical Significance of Symptoms in Smokers with Preserved Pulmonary Function.
-- N Engl J Med
A controlled statistical study to assess measurement variability as a function of test object position and configuration for automated surveillance in a multicenter longitudinal COPD study (SPIROMICS).
-- Med Phys
Understanding the impact of second-hand smoke exposure on clinical outcomes in participants with COPD in the SPIROMICS cohort