TY - JOUR AU - Hellgren, G; Löfqvist, C; Hård, A L TI - Serum concentrations of vascular endothelial growth factor in relation to retinopathy of prematurity JO - Pediatr Res VL - 79 PY - 2016 DO - 10.1038/pr.2015.181 L3 - PubMed-ID: 26372519 SP - 70 EP - 75 N1 - (1-1): ER -