Adida, F. ., Pandia, P. ., Pradana, A. ., Tarigan, A. P. ., Ashar, T. ., Dangana, A. . and Listyoko, A. S. (2023) “Effectiveness of smartphone application in increasing knowledge on COPD and its non-pharmacological management in COPD patients ”, Narra J, 3(3), p. e412. doi: 10.52225/narra.v3i3.412.