1.
Farooq MU, Saeed I, Ul Hassan S, Zaman S, Shah M, Hussain S. Role of Low-Dose Theophylline on Functional Improvement in Patients of Moderately Severe Chronic Obstructive Pulmonary Disease. PAFMJ [Internet]. 2023 Mar. 13 [cited 2024 May 2];73(1):306-09. Available from: https://www.pafmj.org/PAFMJ/article/view/7254