Fasitasari, Minidian. “Nutrition Therapy in Elderly With Chronic Obstructive Pulmonary Disease (COPD)”. Sains Medika: Jurnal Kedokteran Dan Kesehatan, vol. 5, no. 1, June 2013, pp. 50-61, https://doi.org/10.30659/sainsmed.v5i1.366.