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Hippocampal volume, medial temporal and global atrophy scores in cognitively unimpaired APOE ε4 homozygotes (ε4ε4), heterozygotes (ε4ε3) and noncarriers (ε3ε3). Raw concentrations, median, first and third quartile and range are presented by the box plot, p values are further adjusted for age and sex. P-values below the figures presents overall difference between groups
