HAYATI, Zinatul; IWAN TONA , Azwar; PRIMA , Agus. In Vitro Antibacterial Activity of Curcumin and Protocatechuic Acid Against Extended-Spectrum β-Lactamase–Producing Klebsiella pneumoniae Isolated from Chronic Cough Sputum. Journal of Society Medicine, [S. l.], v. 5, n. 1, p. 14–22, 2026. DOI: 10.71197/jsocmed.v5i1.258. Disponível em: https://www.jsocmed.org/go/article/view/258. Acesso em: 2 jun. 2026.