Prematurity and protracted mechanical ventilation as risk factors for Pneumocystis jiroveci infection in HIV-negative neonates in an intensive care unit - Agnieszka Kordek; Lidia Kołodziejczyk; Małgorzata Adamska; Bogumiła Skotarczak; Beata Loniewska; Beata Pawlus; Wanda Kuźna-Grygiel; Jacek Rudnicki; Ryszard Czajka (The Turkish Journal of Pediatrics)