Considerations about the response format of the airways questionnaire 20.
Blanco-Aparicio
Marina
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Verea-Hernando
Hector
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Vázquez
Isabel
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D000203:Activities of Daily Living / Q000145:classification*; D004185:Disability Evaluation; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification / Q000175:diagnosis*; D011788:Quality of Life / Q000523:psychology; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires