Wittchen, H. U. Max Planck Institute of Psychiatry, Max Planck Society;
Lieb, R. Max Planck Institute of Psychiatry, Max Planck Society;
Kuepper, R., van Os, J., Wittchen, H. U., Lieb, R., & Henquet, C. (2009). Cannabis use and true incidence of psychotic symptoms in a population-based sample. Schizophrenia Bulletin, 35(Suppl. 1), 88-89.