Evaluation of VEGF and IGF-1 plasma levels in preterm infants – potential correlation with retinopathy of prematurity, clinical implications - Machalińska, Anna; Modrzejewska, Monika; Dziedziejko, Violetta; Kotowski, Maciej; Safranow, Krzysztof; Herbowska, Aleksandra; Karczewicz, Danuta (Klinika Oczna / Acta Ophthalmologica Polonica, 2009)