Comorbidity Patterns Associated with Renal Dysfunction Across COPD Severity Stages and Clinical Phenotypes - Abdigaffar G. Gadaev; Muborak S. Salaeva; Dinora A. Parpibaeva; Nargiza D. Salimova; Fazilat R. Ismoilova; Abdisalim K. Kulkarayev (International Journal of Medical Science and Dental Health, 2026)