Adida F, Pandia P, Pradana A, Tarigan AP, Ashar T, Dangana A, Listyoko AS. Effectiveness of smartphone application in increasing knowledge on COPD and its non-pharmacological management in COPD patients . Narra J [Internet]. 2023Dec.29 [cited 2025Sep.17];3(3):e412. Available from: https://www.narraj.org/main/article/view/412