00650nas a2200265   4500000000100000000000100001000000100002008004100003260000600044100002300050700002700073700002100100700001900121700002000140700001500160700001400175700001400189700001500203700001700218700001400235245010000249300001400349490000700363022001400370       2012                            d  c71 aJ. Wójkowska-Mach1 aM. Borszewska-Kornacka1 aJoanna Domańska1 aJ. Gadzinowski1 aE. Gułczyńska1 aE. Helwich1 aA. Kordek1 aD. Pawlik1 aJ. Szczapa1 aJerzy Klamka1 aP. Heczko00aEarly-onset Infections of Very-low-birth-weight Infants in Polish Neonatal Intensive Care Units  a691–6950 v31  a0891-3668