Srivastava A, Sharma R, Srivastava G. Clinical profile of disease-causing chronic airflow obstruction in tertiary care centre in Lucknow. Asian J Med Sci [Internet]. 2023 May 1 [cited 2025 Mar. 28];14(5):115-20. Available from: https://ajmsjournal.info/index.php/AJMS/article/view/1719