A new CERAD total score with equally weighted z-scores and additional executive and non-amnestic "CERAD-Plus" tests enhances cognitive diagnosis in patients with Parkinson's disease: Evidence from the LANDSCAPE study. - Lillig R; Ophey A; Schulz JB; Reetz K; Wojtala J; Storch A; Liepelt-Scarfone I; Becker S; Berg D; Balzer-Geldsetzer M; Kassubek J; Hilker-Roggendorf R; et al. (Parkinsonism & related disorders, 2021)