D. T. T. Huyen, “Change in Practice of using Inhalers for Outpatients have Chronic Obstructive Pulmonary at Nam Dinh General Hospital after Health Education”, ijreh, vol. 5, no. 1, Jan. 2021, Accessed: Apr. 11, 2025. [Online]. Available: https://journal-repository.com/index.php/ijreh/article/view/2995