title: Documentation of airflow obstruction is essential to confirm the diagnosis of COPD: are handheld spirometers in an office setting valid?
authors: Dennis E
authors: DE
authors: Doherty
mesh_terms: D004282:Documentation; D006801:Humans; D010824:Physicians' Offices; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis*; D013147:Spirometry / Q000295:instrumentation* / Q000592:standards; D014481:United States