Iyer AS, Parekh TM, O\textquoterightToole J, Bhatt SP, Eakin MN, Krishnan JA, Yohannes AM, Woodruff PG, Cooper CB, Kanner RE, et al. Clinically Significant and Comorbid Anxiety and Depression Symptoms Predict Severe Respiratory Exacerbations in Smokers: A Analysis of the COPDGene and SPIROMICS Cohorts. Ann Am Thorac Soc. 2022;19(1):143–6.