“Increased Serum SP-D Level, Neutrophils and Lymphocytes Sputum in Malang Splendid Bird Market Workers”. Jurnal Respirologi Indonesia 42, no. 2 (April 13, 2022): 129–135. Accessed August 12, 2025. https://jurnalrespirologi.org/index.php/jri/article/view/304.