Albrecht, Helmut H., Peter V. Dicpinigaitis, and Eric P. Guenin. “Role of Guaifenesin in the Management of Chronic Bronchitis and Upper Respiratory Tract Infections”. Multidisciplinary Respiratory Medicine 12, no. 1 (December 11, 2017). Accessed July 7, 2024. https://mrmjournal.org/index.php/mrm/article/view/260.