Radovanovic, Dejan, Pierachille Santus, Francesco Blasi, and Marco Mantero. “The Evidence on Tiotropium Bromide in Asthma: From the Rationale to the Bedside”. Multidisciplinary Respiratory Medicine 12, no. 1 (December 16, 2019). Accessed June 30, 2025. https://mail.mrmjournal.org/index.php/mrm/article/view/237.