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Smoking is associated with an age-related decline in exhaled nitric oxide.
Sundy JS, Hauswirth DW, Mervin-Blake S, Fernandez CA, Patch KB, Alexander KM, Allgood S, McNair PD, Levesque MC. Sundy JS, et al. Among authors: mervin blake s. Eur Respir J. 2007 Dec;30(6):1074-81. doi: 10.1183/09031936.00087807. Epub 2007 Oct 10. Eur Respir J. 2007. PMID: 17928310 Free article.
Test Performance Characteristics of the AIR, GAD-7, and HADS-Anxiety Screening Questionnaires for Anxiety in Chronic Obstructive Pulmonary Disease.
Baker AM, Holbrook JT, Yohannes AM, Eakin MN, Sugar EA, Henderson RJ, Casper AS, Kaminsky DA, Rea AL, Mathews AM, Que LG, Ramsdell JW, Gerald LB, Wise RA, Hanania NA; American Lung Association Airways Clinical Research Centers. Baker AM, et al. Ann Am Thorac Soc. 2018 Aug;15(8):926-934. doi: 10.1513/AnnalsATS.201708-631OC. Ann Am Thorac Soc. 2018. PMID: 29986152 Free PMC article.
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