Rudnicka-Drożak, Rudnicka-Drożak, Grzegorz Nowicki, Katarzyna Naylor, and Patryk Rzońca. 2014. “Seasonality of Infectious Diseases in Children”. Nursing in the 21st Century 13 (1(46): 37-44. https://czasopisma.umlub.pl/piel21w/article/view/2089.