HEDENSTRÖM , Hans; WEGENER , Thomas. Lack of Correlation between the Grade of Methacholine-Induced Bronchial Hyperreactivity and Ipratropium Bronchodilation in Asthmatics. Upsala Journal of Medical Sciences, [S. l.], v. 93, n. 1, p. 71–80, 1988. DOI: 10.1517/03009734000000040. Disponível em: https://ujms.net/index.php/ujms/article/view/6865. Acesso em: 14 nov. 2026.