... design; in the collection, analysis, and interpretation of data; in the writing of the report; nor in the decision to submit the article for publication The researchers are independent from the funders ... data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis All authors read and approved the final manuscript Balcells et al Health and Quality ... comorbidities A better understanding of the influence of psychological status on HRQoL at earlier stages of COPD, including the identification of patients most vulnerable to psychological impairment,...