Variability and magnitude of brain glutamate levels in schizophrenia: a meta and mega-analysis by Merritt, K, McCutcheon, RA, Aleman, A, Ashley, S, Beck, K, Block, W, Bloemen, OJN, Borgan, F, Boules, C, Bustillo, JR, Capizzano, AA, Coughlin, JM, David, A, de la Fuente-Sandoval, C, Demjaha, A, Dempster, K, Do, KQ, Du, F, Falkai, P, Galińska-Skok, B, Gallinat, J, Gasparovic, C, Ginestet, CE, Goto, N, Graff-Guerrero, A, Ho, B-C, Howes, O, Jauhar, S, Jeon, P, Kato, T, Kaufmann, CA, Kegeles, LS, Keshavan, MS, Kim, S-Y, King, B, Kunugi, H, Lauriello, J, León-Ortiz, P, Liemburg, E, Mcilwain, ME, Modinos, G, Mouchlianitis, E, Nakamura, J, Nenadic, I, Öngür, D, Ota, M, Palaniyappan, L, Pantelis, C, Patel, T, Plitman, E