Korelasi antara Kadar β-karoten dan malondialdehida Serum pada Penderita Penyakit Paru Obstruktif Kronik = Correlation between Serum β-carotene and Malondialdehyde Level in Chronic Obstructive - Aditya Mulyantari (Program Studi Magister Ilmu Gizi, 2016)