W. FITTING, J. Respiratory muscles in chronic obstructive pulmonary disease. Swiss Medical Weekly, [S. l.], v. 131, n. 3334, p. 483–486, 2001. DOI: 10.4414/smw.2001.09771. Disponível em: https://smw.ch/index.php/smw/article/view/97. Acesso em: 16 apr. 2024.