Selection of novel reference genes for use in the human central nervous system: a BrainNet Europe Study - Durrenberger, PF; Fernando, FS; Magliozzi, R; Kashefi, SN; Bonnert, TP; Ferrer, I; Seilhean, D; Nait-Oumesmar, B; Schmitt, A; Gebicke-Haerter, PJ; Falkai, P; Gruenblatt, E; et al. (ACTA NEUROPATHOLOGICA, 2012)