Surfactant Protein A Serum Level in Cement Worker. Jurnal Respirologi Indonesia, [S. l.], v. 42, n. 4, p. 311–318, 2022. DOI: 10.36497/jri.v42i4.363. Disponível em: http://www.jurnalrespirologi.org/index.php/jri/article/view/363. Acesso em: 5 jul. 2025.