FREQUENCY OF POLYCYTHEMIA IN PATIENTS PRESENTING WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE. The Research of Medical Science Review, [S. l.], v. 3, n. 7, p. 1544–1554, 2025. Disponível em: https://medicalsciencereview.com/index.php/Journal/article/view/1684.. Acesso em: 2 may. 2026.