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Risk Factors Associated with Ninety Day Readmission in Chronic Obstructive Pulmonary Disease Exacerbation at a Tertiary Care Hospital: A retrospective cohort study. Kathmandu Univ. Med. J. [Internet]. 2020 Dec. 31 [cited 2026 Jul. 16];18(4):372-5. Available from: https://nepjol.info/index.php/KUMJ/article/view/49248