Ayaulym N. Zhamakurova, Dariga S.Smailova, Altai A.Amanbayev, and Gulvira T.Magulova. “PREVALENCE AND RISK FACTORS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE”. Foundations and Trends in Modern Learning, no. 2 (May 1, 2023). Accessed May 21, 2026. https://ojs.publisher.agency/index.php/FTML/article/view/1332.