Ü. Özden Sertçelik, A. Sertçelik, K. . Huseynova, A. Öncel, E. Damadoğlu, and L. Çöplü, “The Association Between Comorbidities and a High-Risk Status According to COPD GOLD Groups”, Acta Medica, vol. 54, no. 1, pp. 27–34, Dec. 2022.