APPLYING BETTY NEUMAN SYSTEMS MODEL IN THE MANAGEMENT OF A PATIENT WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD). Frontier in Medical and Health Research, [S. l.], v. 4, n. 3, p. 4207–4211, 2026. Disponível em: https://fmhr.net/index.php/fmhr/article/view/3785.. Acesso em: 8 nov. 2026.