preexisting differences in hippocampal morphology. 39 We also acknowledge that the heterogeneity of the patient population and the variable posttreatment intervals of the neuropsychological evaluations are potential confounding factors. The sample size may have limited the power to detect small to moderate size effects, and to study possible interactions with disease-related factors, such as brain tumor type and location, and the possible contribution of focal vs whole-brain RT. We could not assess a dose e…
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