Kołodziej, M. et al. 2017. Nosocomial septicemia diseases in infants with body mass below 2500g, treated in Intensive Care Unit - comparative analysis. Nursing in the 21st Century. 16, 2(59) (Nov. 2017), 47–52. DOI:https://doi.org/10.1515/pielxxiw-2017-0018.