“Effects of Omega-3 Polyunsaturated Fatty Acids to The Serum Level of Interleukin-8, Percentage of Forced Expiratory Volume in 1 Second (%FEV1), and COPD Assesment Test Scores in Stable COPD Patients”. Jurnal Respirologi Indonesia, vol. 37, no. 4, Oct. 2017, pp. 265-77, https://doi.org/10.36497/jri.v37i4.80.