Corrigendum to “Long-term course of negative symptom subdomains and relationship with outcome in patients with a psychotic disorder” (Schizophrenia Research (2018) 193 (173–181), (S0920996417303638) (10.1016/j.schres.2017.06.024))

The authors regret that the GROUP-investigators were not acknowledged for their work due to a missing affiliation in the original publication. The new authorship line is: Annemarie P.M. Stiekema ^a,b Md Atiqul Islam ^c,d,e Edith J. Liemburg ^c,d,f Stynke Castelein ^c,g Edwin R. van den Heuvel ^h Jaap van Weeghel ^i,j André Aleman ^f,k Richard Bruggeman ^c,d Lisette van der Meer ^a,c GROUP-investigators ^{l a} Lentis Psychiatric Institute, Department of Rehabilitation, Zuidlaren, The Netherlands ^b School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre, Maastricht, The Netherlands ^c University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Groningen, The Netherlands ^d University of Groningen, University Medical Center Groningen, Groningen, Rob Giel Research center, The Netherlands ^e Department of Statistics, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh ^f University of Groningen, University Medical Center Groningen, Department of Neuroscience, Groningen, The Netherlands ^g Lentis Psychiatric Institute, Research Department, Groningen, The Netherlands ^h Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands ⁱ Parnassia Group, Dijk en Duin Mental Health Center, Castricum, The Netherlands ^j Department of TRANZO, Tilburg School of Social and Behavioral Sciences, Tilburg University, The Netherlands ^k University of Groningen, Department of Clinical Psychology and Experimental Psychopathology, Groningen, The Netherlands ^l GROUP investigators are: Behrooz Z. Alizadeh ^m , Agna A. Bartels-Velthuis ⁿ , Nico J. van Beveren ^o,p,q , Richard Bruggeman ⁿ , Wiepke Cahn ^r , Lieuwe de Haan ^s , Philippe Delespaul ^t , Carin J. Meijer ^s , Inez Myin-Germeys ^u , Rene S. Kahn ^r , Frederike Schirmbeck ^s , Claudia J.P. Simons ^t,v , Neeltje E.M. van Haren ^r,w , Jim van Os ^t,x , Ruud van Winkel ^{u m} University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands ⁿ University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Rob Giel Research center, Groningen, The Netherlands ^o Antes Center for Mental Health Care, Rotterdam, The Netherlands ^p Erasmus MC, Department of Psychiatry, Rotterdam, The Netherlands ^q Erasmus MC, Department of Neuroscience, Rotterdam, The Netherlands ^r University Medical Center Utrecht, Department of Psychiatry, Brain Centre Rudolf agnus, Utrecht, The Netherlands ^s Academic Medical Center, University of Amsterdam, Department of Psychiatry, Amsterdam, The Netherlands ^t Maastricht University Medical Center, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht, The Netherlands ^u KU Leuven, Department of Neuroscience, Research Group Psychiatry, Center for Clinical Psychiatry, Leuven, Belgium ^v GGzE, Institute for Mental Health Care Eindhoven and De Kempen, Eindhoven, The Netherlands ^w Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Centre, Rotterdam, Netherlands ^x King's College London, King's Health Partners, Department of Psychosis Studies, Institute of Psychiatry, London, United Kingdom The authors apologise for any inconvenience caused.