Kawkitinarong K, Yingchutrakul T, Sittipunt C, Wongtim S. Correlation between health-related quality of life using St. George’s Respiratory Questionnaire and pulmonary function testing in Thai patients with chronic obstructive pulmonary disease. Chula Med J [internet]. 2023 Sep. 19 [cited 2026 Sep. 12];56(4). available from: https://he05.tci-thaijo.org/index.php/CMJ/article/view/796