ALFAWZAN, Khalid Mohammed Abdulrahman et al. The Effectiveness of Deep Breathing Techniques in Improving Lung Function in Patients with Chronic Obstructive Pulmonary Disease (COPD) . Journal of International Crisis and Risk Communication Research , [S. l.], p. 433–441, 2024. DOI: 10.63278/jicrcr.vi.400. Disponível em: https://jicrcr.com/index.php/jicrcr/article/view/400. Acesso em: 16 oct. 2025.