Genetic Risk and Outcome of Psychosis (GROUP) Investigators

GROUP investigators are: Behrooz Z. Alizadeha,p, Therese van Amelsvoortg, Agna A. Bartels-Velthuisa, Nico J. van Beverenb,c,d, Richard Bruggemana,l, Wiepke Cahne,k, Lieuwe de Haanf,o, Philippe Delespaulg, Jurjen J. Luykxe,m, Inez Myin-Germeysh, Rene S. Kahne,n, Frederike Schirmbeckf,o, Claudia J.P. Simonsg,i, Jim van Ose,j, Ruud van Winkelg,h


a University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Rob Giel Research center, The Netherlands;

b Antes Center for Mental Health Care, Rotterdam, The Netherlands;

c Erasmus MC, Department of Psychiatry, Rotterdam, The Netherlands;

d Erasmus MC, Department of Neuroscience,  Rotterdam, The Netherlands;

e University Medical Center Utrecht, Department of Psychiatry, Brain Centre Rudolf Magnus, Utrecht University, Utrecht, The Netherlands;

f Amsterdam UMC, University of Amsterdam, Department of Psychiatry, Amsterdam, The Netherlands;

g Maastricht University Medical Center, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht, The Netherlands;

h KU Leuven, Department of Neuroscience, Research Group Psychiatry, Leuven, Belgium;

i GGzE Institute for Mental Health Care, Eindhoven, the Netherlands;

j King’s College London, King’s Health Partners, Department of Psychosis Studies, Institute of Psychiatry, London, United Kingdom

k Altrecht, General Menthal Health Care, Utrecht, The Netherlands
l University of Groningen, Department of Clinical and Developmental Neuropsychology, Groningen, The Netherlands

m University Medical Center Utrecht, Department of Translational Neuroscience, Brain Center Rudolf Magnus, Utrecht, The Netherlands

n Dept of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY

o Arkin, Institute for Mental Health, Amsterdam, The Netherlands

p University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands



Please take care of the following when writing and submitting your manuscript!


‘GROUP investigators’ should always be mentioned on the manuscript as a co-author.

The names of all GROUP investigators should be mentioned in a byline; the place to do this may depend on the journal’s requirements. Generally, footnotes are not accepted.

Also, be aware of uploading all GROUP investigators’ names during the submission process. Sometimes it is not possible to have a group name as an author (e.g, Acta), in which case all GROUP authors will have to be co-authors: if so, put them as in-between authors and not as the last ones.

Additional information: The byline of the article identifies who is directly responsible for the manuscript, and MEDLINE lists as authors whichever names appear on the byline. If the byline includes a group name, MEDLINE will list the names of individual group members who are authors or who are collaborators, sometimes called non-author contributors, if there is a note associated with the byline clearly stating that the individual names are elsewhere in the paper and whether those names are authors or collaborators. [GROUP-investigators belong to point 2.]


When you have questions about this or when you are encountering difficulties, please contact your site coordinator immediately:

Amsterdam: Frederike Schirmbeck,

Groningen: Agna Bartels,

Maastricht: Claudia Simons,

Utrecht: Joyce van Baaren,


Add-on studies

Add to author list: “For Genetic Risk and Outcome of Psychosis (GROUP) Investigators”.



Korver, N., Quee, P.J., Boos, H.B.M., Simons, C.J.P., de Haan, L., GROUP Investigators (2012). Genetic Risk and Outcome of Psychosis (GROUP), a multi site longitudinal cohort study focused on gene–environment interaction: Objectives, sample characteristics, recruitment and assessment methods. International Journal of Methods in Psychiatric Research, doi: 10.1002/mpr.1352



The infrastructure for the GROUP study is funded through the Geestkracht programme of the Dutch Health Research Council (Zon-Mw, grant number 10-000-1001), and matching funds from participating pharmaceutical companies (Lundbeck, AstraZeneca, Eli Lilly, Janssen Cilag) and universities and mental health care organizations (Amsterdam: Academic Psychiatric Centre of the Academic Medical Center and the mental health institutions: GGZ Ingeest, Arkin, Dijk en Duin, GGZ Rivierduinen, Erasmus Medical Centre, GGZ Noord Holland Noord. Groningen: University Medical Center Groningen and the mental health institutions: Lentis, GGZ Friesland, GGZ Drenthe, Dimence, Mediant, GGNet Warnsveld, Yulius Dordrecht and Parnassia psycho-medical center The Hague. Maastricht: Maastricht University Medical Centre and the mental health institutions: GGzE, GGZ Breburg, GGZ Oost-Brabant, Vincent van Gogh voor Geestelijke Gezondheid, Mondriaan, Virenze riagg, Zuyderland GGZ, MET ggz, Universitair Centrum Sint-Jozef Kortenberg, CAPRI University of Antwerp, PC Ziekeren Sint-Truiden, PZ Sancta Maria Sint-Truiden, GGZ Overpelt, OPZ Rekem. Utrecht: University Medical Center Utrecht and the mental health institutions Altrecht, GGZ Centraal and Delta.)




We are grateful for the generosity of time and effort by the patients, their families and healthy subjects. Furthermore we would like to thank all research personnel involved in the GROUP project, in particular:

Joyce van Baaren, Erwin Veermans, Ger Driessen, Truda Driesen, Karin Pos, Erna van ’t Hag, Jessica de Nijs and Atiqul Islam.


Conflicts of Interest


Zie het Methode paper van GROUP:

Genetic Risk and Outcome of Psychosis (GROUP), a multi site longitudinal cohort study focused on gene–environment interaction: objectives, sample characteristics, recruitment and assessment methods
Author: Nikie Korver
International Journal of Methods in Psychiatric Research
Int. J. Methods Psychiatr. Res. (2012)
Published online in Wiley Online Library (
DOI: 10.1002/mpr.1352

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