D. A. . Lindra, E. . Purwaningsih, A. R. H. . Utomo, F. . Yunus, and M. E. . Harahap, “The Impact of Klotho Gene Polymorphisms on Chronic Obstructive Pulmonary Disease (COPD): A Systematic Review”, Respir Scie, vol. 5, no. 2, pp. 99-114, Feb. 2025.