Tiyaworanan K. Spirometry Test Results and Factors Associated with Quality of Spirometry Test in Patients with Chronic Obstructive Pulmonary Disease (COPD) at Sisaket Hospital. SRIMEDJ [internet]. 2017 Jan. 22 [cited 2026 Aug. 29];31(6):348-54. available from: https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/75272