Zanasi, Alessandro, Luigi Lanata, Giovanni Fontana, Federico Saibene, Peter Dicpinigaitis, and Francesco De Blasio. “Levodropropizine for Treating Cough in Adult and Children: A Meta-Analysis of Published Studies”. Multidisciplinary Respiratory Medicine 10, no. 1 (May 31, 2015). Accessed July 7, 2024. https://mrmjournal.org/index.php/mrm/article/view/293.