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. 2021 Dec 21;4(1):vdab183. doi: 10.1093/noajnl/vdab183

Figure 1.

Figure 1.

(A) Relative contribution of WHO grade per time period for malignant tumors and (B) the percentage of microscopic verification over time for patients <18 years diagnosed with a CNS tumor in the Netherlands between 1990 and 2017.