INCIDENCE OF POLYCYTHEMIA AMONG PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE ADMITTED TO THE DEPARTMENT OF MEDICINE IN TERTIARY CARE HOSPITAL. FMHR [Internet]. 2025 Jul. 12 [cited 2026 Oct. 27];3(5):2544-52. Available from: https://fmhr.net/index.php/fmhr/article/view/3559