High loading of polygenic risk in cases with chronic schizophrenia

S M Meier, E Agerbo, R Maier, C B Pedersen, M Lang, J Grove, M V Hollegaard, D Demontis, B B Trabjerg, C Hjorthøj, S Ripke, F Degenhardt, M M Nöthen, D Rujescu, W Maier, T Werge, O Mors, D M Hougaard, A D Børglum, N R WrayM Rietschel, M Nordentoft, P B Mortensen, M Mattheisen, MooDS SCZ Consortium