Fig. 1.
PRISMA Flow Diagram of literature search. All full-text excluded studies together with the reason why they were excluded are listed in the supplementary Table 3. Abbreviations: Cd, caudate nucleus; CSF, cerebrospinal fluid; GMV, gray matter volume; LV, lateral ventricles; VBM, voxel-based morphometry; WBV, whole brain volume; WMV, white matter volume.