Ali MA, Islam MS, Majumdar SC, Haque MA, Sardar AH. Role of Spirometry in Early Diagnosis of COPD among Smokers. TAJ: J of Teachers Assoc [Internet]. 2019 Aug. 22 [cited 2024 Oct. 19];32(1):33-8. Available from: https://banglajol.info/index.php/TAJ/article/view/42733