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Influence of cannabis use on incidence of psychosis in people at clinical high risk.
Chester LA, Valmaggia LR, Kempton MJ, Chesney E, Oliver D, Hedges EP, Klatsa E, Stahl D, van der Gaag M, de Haan L, Nelson B, McGorry P, Amminger GP, Riecher-Rössler A, Studerus E, Bressan R, Barrantes-Vidal N, Krebs MO, Glenthøj B, Nordentoft M, Ruhrmann S, Sachs G, McGuire P; EU-GEI High Risk Study Group. Chester LA, et al. Among authors: de haan l. Psychiatry Clin Neurosci. 2023 Sep;77(9):469-477. doi: 10.1111/pcn.13555. Epub 2023 May 13. Psychiatry Clin Neurosci. 2023. PMID: 37070555 Free PMC article.
The five-factor model of the Positive and Negative Syndrome Scale I: confirmatory factor analysis fails to confirm 25 published five-factor solutions.
van der Gaag M, Cuijpers A, Hoffman T, Remijsen M, Hijman R, de Haan L, van Meijel B, van Harten PN, Valmaggia L, de Hert M, Wiersma D. van der Gaag M, et al. Among authors: de haan l, de hert m. Schizophr Res. 2006 Jul;85(1-3):273-9. doi: 10.1016/j.schres.2006.04.001. Epub 2006 May 26. Schizophr Res. 2006. PMID: 16730430
Disability in people clinically at high risk of psychosis.
Velthorst E, Nieman DH, Linszen D, Becker H, de Haan L, Dingemans PM, Birchwood M, Patterson P, Salokangas RK, Heinimaa M, Heinz A, Juckel G, von Reventlow HG, French P, Stevens H, Schultze-Lutter F, Klosterkötter J, Ruhrmann S. Velthorst E, et al. Among authors: de haan l. Br J Psychiatry. 2010 Oct;197(4):278-84. doi: 10.1192/bjp.bp.109.075036. Br J Psychiatry. 2010. PMID: 20884950
891 results