Authors: Johannes Langeveld; Inge Joa; Svein Friis; Wenche ten Velden Hegelstad; Ingrid Melle; Jan O Johannessen; Stein Opjordsmoen; Erik Simonsen; Per Vaglum; Bjørn Auestad; Thomas McGlashan; Tor K Larsen Journal: Eur Arch Psychiatry Clin Neurosci Date: 2012-03-23 Impact factor: 5.270