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(a) Kaplan-Meier plot of progression-free survival stratified according to tumor multifocality in 2492 patients treated with radical nephroureterectomy (RNU) for upper-tract urothelial carcinoma (UTUC). (b) Kaplan-Meier plot of cancer-specific survival stratified according to tumor multifocality in 2492 patients treated with RNU for UTUC.SE = standard error.
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