Psychologic and physiologic factors related to dyspnea in subjects with chronic obstructive pulmonary disease.
D000368:Aged; D000402:Airway Obstruction / Q000175:diagnosis / Q000209:etiology; D003422:Critical Care; D004417:Dyspnea / Q000150:complications* / Q000175:diagnosis / Q000523:psychology; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications* / Q000523:psychology; D008297:Male; D008875:Middle Aged; D010366:Peak Expiratory Flow Rate; D012119:Respiration