Trischler-Čeke, Z., D. Bandić, and M. Planinić. 2008. “Nasopharyngeal Colonisation and Resistance of Streptococcus Pneumoniae, Moraxella Catarrhalis and Haemophilus Influenzae in Pre-School Children With Diagnosis Otitis Media Acuta”. Paediatria Croatica 52 (2): 65-70. https://doi.org/10.13112/pc.947.