Božić, Franjo, and Neven Pavlov. “The Impact of Passive Smoking on the Frequency of Respiratory Infections in Preschool Children”. Paediatria Croatica 58, no. 3 (September 30, 2014): 184–189. Accessed December 16, 2025. https://paedcro.izahost.com/index.php/paedcro/article/view/611.