Occurrence of Fibrotic Tumor Vessels in Grade I Meningiomas Is Strongly Associated with Vessel Density, Expression of VEGF, PlGF, IGFBP-3 and Tumor Recurrence. - Hess, Katharina; Spille, Dorothee Cäcilia; Adeli, Alborz; Sporns, Peter B.; Zitta, Karina; Hummitzsch, Lars; Pfarr, Julian; Stummer, Walter; Brokinkel, Benjamin; Berndt, Rouven; Albrecht, Martin (Cancers, 2020)