Head-to-head comparisons of metabolic side effects of second generation antipsychotics in the treatment of schizophrenia: a systematic review and meta-analysis - Rummel-Kluge, C; Komossa, K; Schwarz, S; Hunger, H; Schmid, F; Lobos, CA; Kissling, W; Davis, JM; Leucht, S (Schizophrenia Research, 2010)