Prevention of negative symptom psychopathologies in first-episode schizophrenia: two-year effects of reducing the duration of untreated psychosis

Ingrid Melle, Tor K Larsen, Ulrik Haahr, Svein Friis, Jan O Johannesen, Stein Opjordsmoen, Bjørn R Rund, Erik Simonsen, Per Vaglum, Thomas McGlashan