S, V.; N, R.; B, R. A comparative study of safety and efficacy of tiotropium bromide with salbutamol in moderate persistent bronchial asthma in a tertiary care hospital. International Journal of Research in Medical Sciences, [S. l.], v. 2, n. 4, p. 1479–1482, 2017. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/2444. Acesso em: 30 oct. 2025.