... Cite this article as: Neelam et al.: A systematic review and meta-analysis of neurological soft signs in relatives of people with schizophrenia BMC Psychiatry 2011 11:139 Submit your next manuscript ... Janssen J, Diaz-Caneja A, Reig S, Bombin I, Mayoral M, Parellada M, Graell M, Moreno D, Zabala A, Vazquez VG, Desco M, Arango C: Brain morphology and neurological soft signs in adolescents with ... their siblings the result of perinatal trauma? Acta Psychiatrica Scandinavica 2000, 101:142-147 32 Orwin RG: A fail-safe N for effect size in meta-analysis Journal of Educational Statistics 1983,...