Diagnostic accuracy of a pocket screening spirometer in diagnosing chronic obstructive pulmonary disease in general practice: a cross sectional validation study using tertiary care as a reference.
Marina LaborŽarko VrbicaIvan GudeljSlavica LaborDavor PlavecPublished in: BMC family practice (2016)
ClinicalTrials.gov Identifier NCT01550679 Registered 28 September 2014, retrospectively registered.