SCHAFROTH TÖRÖK, S.; D. LEUPPI, J. Bronchial hyper-responsiveness and exhaled nitric oxide in chronic obstructive pulmonary disease. Swiss Medical Weekly, [S. l.], v. 137, n. 2728, p. 385–385, 2007. DOI: 10.4414/smw.2007.11677. Disponível em: https://smw.ch/index.php/smw/article/view/751. Acesso em: 10 sep. 2024.