Emeryk , Andrzej. “Acute Laryngeal Infections, or Disease Entities from the Circle of Croup in Children”. Alergoprofil 13, no. 4 (January 18, 2018): 131-134. Accessed May 26, 2026. https://www.journalsmededu.pl/index.php/alergoprofil/article/view/901.