Nerve growth factor induces vascular endothelial growth factor expression in granulosa cells via a trkA receptor/mitogen-activated protein kinase-extracellularly regulated kinase 2-dependent pathway - Julio-Pieper, M; Lozada, P; Tapia, V; Vega, M; Miranda, C; Vantman, D; Ojeda, S; Romero, C (J Clin Endocrinol Metab, 2009)