D. Kardum, B. Filipović-Grčić, A. Müller, and S. Dessardo, “Incidence and risk factors for moderate and severe bronchopulmonary dysplasia in very low birth weight infants in two Croatian perinatal regions – a retrospective cohort study”, J Pediatr Neonat Individual Med, vol. 8, no. 1, p. e080129, Apr. 2019.