Increased ventral striatal CB1 receptor binding is related to negative symptoms in drug-free patients with schizophrenia. - Jenny Ceccarini; Marc De Hert; Ruud van Winkel; Joseph Peuskens; Guy Bormans; Laura Kranaster; Frank Enning; Dagmar Koethe; F. Markus Leweke; Koen Van Laere (NeuroImage, 2013)