Timo Soeterik

117 External validation of the Martini Nomogram 19. Sighinolfi MC, Sandri M, Torricelli P, et al. External validation of a novel side-specific, multiparametric magnetic resonance imaging-based nomogram for the prediction of extracapsular extension of prostate cancer: preliminary outcomes on a series diagnosed with multiparametric magnetic resonance imaging-targeted plus systematic saturation biopsy. BJU Int . 2019;124:192-194. 20. Bouwmeester W, Twisk JW, Kappen TH, Van Klei WA, Moons KG, Vergouwe Y. Prediction models for clustered data: Comparison of a random intercept and standard regression model. BMC Med Res Methodol . 2013;13(1). 21. Costa DN, Passoni NM, Leyendecker JR, et al. Diagnostic Utility of a Likert Scale Versus Qualitative Descriptors and Length of Capsular Contact for Determining Extraprostat ic Tumor Extension at Multiparametric Prostate MRI. AJR Am J Roentgenol .2018;210:1066-1072. 22. Freifeld Y, A DDL, Xi Y, et al. Diagnostic Performance of Prospectively Assigned Likert Scale Scores to Determine Extraprostatic Extension and Seminal Vesicle Invasion With Multiparametric MRI of the Prostate. AJR Am J Roentgenol . 2019;212:576-581. 6