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The stratification procedure of iRBD patients using trail‐making part B (TMT‐B) or hyposmia as the first‐line stratification tool and 123I‐FP‐CIT‐SPECT as the second‐line stratification tool. In brackets, the percentage of stratified patients out of the starting sample (47 iRBD patients) is reported. [Color figure can be viewed at wileyonlinelibrary.com]
