De Benedetto, Fernando, and Gianfranco Sevieri. “Prevention of Respiratory Tract Infections With Bacterial Lysate OM-85 Bronchomunal in Children and Adults: A State of the Art”. Multidisciplinary Respiratory Medicine 8, no. 9 (May 22, 2013). Accessed July 7, 2024. https://mrmjournal.org/index.php/mrm/article/view/510.