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2023
1 Gohar, Sherif Mostafa Mohamed Ahmed; Hegelstad, Wenche; Auestad, Bjørn Henrik; Haahr, Ulrik Helt; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Kjetil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Friis, Svein; Melle, Ingrid.
Association between early suicidal trajectories in first-episode psychosis and 10-year follow-up: TIPS registry-linked study. The Lancet Psychiatry 2023 ;Volum 10.(7) s. 528-536
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2 Ingeborgrud, Christine Baalsrud; Ørbeck, Beate; Friis, Svein; Zeiner, Pål; Pripp, Are Hugo; Aase, Heidi; Biele, Guido; Dalsgaard, Søren; Øvergaard, Kristin.
Anxiety and depression from age 3 to 8 years in children with and without ADHD symptoms. Scientific Reports 2023 ;Volum 13. s. -
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3 Øvergaard, Kristin; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Aase, Heidi; Biele, Guido; Ingeborgrud, Christine Baalsrud; Polanczyk, Guilherme V.; Zeiner, Pål.
Early and repeated screening detects children with persistent attention-deficit/hyperactivity disorder. European Child and Adolescent Psychiatry 2023 s. -
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2022
4 Biele, Guido; Lekhal, Ratib; Øvergaard, Kristin Romvig; Wang, Mari Vaage; Brandlistuen, Ragnhild Eek; Friis, Svein; Zeiner, Pål.
The effect of special educational assistance in early childhood education and care on psycho-social difficulties in elementary school children. Child and Adolescent Psychiatry and Mental Health (CAPMH) 2022 ;Volum 16. s. -
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5 Biele, Guido; Øvergaard, Kristin Romvig; Friis, Svein; Zeiner, Pål; Aase, Heidi.
Cognitive, emotional, and social functioning of preschoolers with attention deficit hyperactivity problems. BMC Psychiatry 2022 ;Volum 22. s. -
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6 Ruud, Torleif; Friis, Svein.
Continuity of care and therapeutic relationships as critical elements in acute psychiatric care. World Psychiatry 2022 ;Volum 21.(2) s. 241-242
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7 Øvergaard, Kristin; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Aase, Heidi; Biele, Guido; Ingeborgrud, Christine Baalsrud; Polanczyk, Guilherme V.; Zeiner, Pål.
Attention-deficit/hyperactivity disorder from preschool to school age: change and stability of parent and teacher reports. European Child and Adolescent Psychiatry 2022 s. -
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2021
8 Hem, Erlend; Kirkevold, Marit; Friis, Svein; Vaglum, Per Jørgen Wiggen.
Innføring i klinisk forskning og fagutvikling. Universitetsforlaget 2021 (ISBN 978-82-15-05659-3) 218 s.
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9 Ottesen, Akiah; Hegelstad, Wenche; Joa, Inge; Opjordsmoen, Stein E.; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Johannessen, Jan Olav; Larsen, Tor Ketil; Haahr, Ulrik Helt; McGlashan, Thomas H.; Friis, Svein; Melle, Ingrid.
Childhood trauma, antipsychotic medication, and symptom remission in first-episode psychosis. Psychological Medicine 2021 s. 1-10
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10 Overgaard, Kristin Romvig; Ørbeck, Beate; Wagner, Karine; Friis, Svein; Øhre, Beate; Zeiner, Pål.
Youth with hearing loss: Emotional and behavioral problems and quality of life. International Journal of Pediatric Otorhinolaryngology 2021 ;Volum 145. s. -
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11 Ruud, Torleif; Friis, Svein.
Community-based Mental Health Services in Norway. Consortium Psychiatricum 2021 ;Volum 2.(1) s. 47-54
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12 Vaskinn, Anja; Sundet, Kjetil; Melle, Ingrid; Andreassen, Ole A.; Friis, Svein.
The factor structure of social cognition in schizophrenia: Weak evidence for separable domains. Schizophrenia Research: Cognition 2021 ;Volum 26. s. 1-4
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13 Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Aase, Heidi; Zeiner, Pål.
Predictive validity of attention-deficit/hyperactivity disorder from ages 3 to 5 Years. European Child and Adolescent Psychiatry 2021 ;Volum 31. s. 1093-1102
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2020
14 Srihari, Vinod H.; Guloksuz, Sinan; Friis, Svein.
Natural History, Not Lead Time. American Journal of Psychiatry 2020 ;Volum 177.(12) s. 1185-1185
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15 Wedervang-Resell, Kirsten; Ueland, Thor; Aukrust, Pål; Friis, Svein; Holven, Kirsten Bjørklund; Johannessen, Cecilie Haggag; Lekva, Tove; Lonning, Vera Louise Hiorth; Smelror, Runar; Szabo, Attila; Andreassen, Ole Andreas; Myhre, Anne Margrethe; Agartz, Ingrid.
Reduced levels of circulating adhesion molecules in adolescents with early-onset psychosis. Nature NPJ Schizophrenia 2020 ;Volum 6. s. 1-8
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2019
16 Ferrara, Maria; Guloksuz, Sinan; Li, Fangyong; Burke, Shadie; Tek, Cenk; Friis, Svein; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Melle, Ingrid; Simonsen, Erik; Srihari, Vinod H..
Parsing the impact of early detection on duration of untreated psychosis (DUP): Applying quantile regression to data from the Scandinavian TIPS study. Schizophrenia Research 2019 ;Volum 210. s. 128-134
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17 Friis, Svein; Melle, Ingrid; McGlashan, Thomas H..
Symptom remission at 12-weeks is a strong predictor for long term outcome. Psychological Medicine 2019 ;Volum 50.(14)
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18 Wedervang-Resell, Kirsten; Friis, Svein; Lonning, Vera Louise Hiorth; Smelror, Runar; Johannessen, Cecilie Haggag; Agartz, Ingrid; Ulven, Stine Marie; Holven, Kirsten Bjørklund; Andreassen, Ole Andreas; Myhre, Anne Margrethe.
Lipid alterations in adolescents with early-onset psychosis may be independent of antipsychotic medication. Schizophrenia Research 2019 s. 1-7
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19 Wedervang-Resell, Kirsten; Friis, Svein; Lonning, Vera Louise Hiorth; Smelror, Runar; Johannessen, Cecilie Haggag; Reponen, Elina Johanna; Lyngstad, Siv Hege; Lekva, Tove; Aukrust, Pål; Ueland, Thor; Andreassen, Ole Andreas; Agartz, Ingrid; Myhre, Anne Margrethe.
Increased interleukin 18 activity in adolescents with early-onset psychosis is associated with cortisol and depressive symptoms. Psychoneuroendocrinology 2019 ;Volum 112:104513. s. 1-7
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20 Weibell, Melissa Anne E; Johannessen, Jan Olav; Auestad, Bjørn Henrik; Bramness, Jørgen Gustav; Brønnick, Kolbjørn Kallesten; Haahr, Ulrik; Joa, Inge; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Stain, Helen J.; Friis, Svein; Hegelstad, Wenche.
Early substance use cessation improves cognition-10 years outcome in first-episode psychosis patients. Frontiers in Psychiatry 2019 ;Volum 10. s. -
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21 Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Biele, Guido; Pripp, Are Hugo; Aase, Heidi; Zeiner, Pål.
Screening With an ADHD-Specific Rating Scale in Preschoolers: A Cross-Cultural Comparison of the Early Childhood Inventory-4. Psychological Assessment 2019 ;Volum 31.(8) s. 985-994
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2018
22 Gardsjord, Erlend Strand; Romm, Kristin Lie; Røssberg, Jan Ivar; Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Melle, Ingrid.
Depression and functioning are important to subjective quality of life after a first episode psychosis. Comprehensive Psychiatry 2018 ;Volum 86. s. 107-114
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23 Moore, Jennifer; Friis, Svein; Graham, Ian D.; Gundersen, Elisabeth; Nordvik, Jan Egil.
Reported use of evidence in clinical practice: A survey of rehabilitation practices in Norway. BMC Health Services Research 2018 ;Volum 18.(379)
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24 Øvergaard, Kristin Romvig; Madsen, Kathrine Bang; Ørbeck, Beate; Friis, Svein; Obel, Carsten.
The predictive validity of the Strengths and Difficulties Questionnaire for child attention-deficit/hyperactivity disorder. European Child and Adolescent Psychiatry 2018 ;Volum 28.(5) s. 625-633
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25 Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Biele, Guido; Aase, Heidi; Zeiner, Pål.
Inattention in pre-School ADHD- are there gender differences?. Eunethdis, 5th international conferance on ADHD; 2018-09-23 - 2018-09-26
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26 Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Biele, Guido; Aase, Heidi; Zeiner, Pål.
Attention-Deficit/Hyperactivity Disorder in Preschoolers: The Accuracy of a Short Screener. Journal of the American Academy of Child and Adolescent Psychiatry 2018 ;Volum 57.(6) s. 428-435
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27 Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Biele, Guido; Aase, Heidi; Zeiner, Pål.
Dr Øvergaard et al. Reply. Journal of the American Academy of Child and Adolescent Psychiatry 2018 ;Volum 57.(9) s. 701-702
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2017
28 Bendiksen, Bothild; Svensson, Elisabeth; Aase, Heidi; Reichborn-Kjennerud, Ted; Friis, Svein; Myhre, Anne Margrethe; Zeiner, Pål.
Co-Occurrence of ODD and CD in Preschool Children With Symptoms of ADHD. Journal of Attention Disorders 2017 ;Volum 21.(9) s. 741-752
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29 Falkum, Erik; Klungsøyr, Ole; Lystad, June Ullevoldsæter; Bull, Helen Christine; Evensen, Stig; Martinsen, Egil Wilhelm; Friis, Svein; Ueland, Torill.
Vocational rehabilitation for adults with psychotic disorders in a Scandinavian welfare society. BMC Psychiatry 2017 ;Volum 17:24. s. 1-11
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30 Furre, Astrid; Falk, Ragnhild Sørum; Sandvik, Leiv; Friis, Svein; Knutzen, Maria; Hanssen-Bauer, Ketil.
Characteristics of adolescents frequently restrained in acute psychiatric units in Norway: A nationwide study. Child and Adolescent Psychiatry and Mental Health (CAPMH) 2017 ;Volum 11.(1)
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31 Gardsjord, Erlend Strand; Romm, Kristin Lie; Røssberg, Jan Ivar; Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Melle, Ingrid.
Is going into stable symptomatic remission associated with a more positive development of life satisfaction? A 10-year follow-up study of first episode psychosis. Schizophrenia Research 2017 ;Volum 193. s. 364-369
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32 Langeveld, Johannes H.; Bjørkly, Stål; Evensen, Julie Horgen; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Hegelstad, Wenche; McGlashan, Tom; Friis, Svein.
A 10-year follow-up study of violent victimization in first episode psychosis : risk and protective factors. Psychiatry Research 2017 ;Volum 259.(January) s. 545-549
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33 Melle, Ingrid; Johannessen, Jan Olav; Haahr, Ulrik H.; Hegelstad, Wenche; Joa, Inge; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Qin, Ping; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas H.; Friis, Svein.
Causes and predictors of premature death in first-episode schizophrenia spectrum disorders. World Psychiatry 2017 ;Volum 16.(2) s. 217-218
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34 Weibell, Melissa Anne; Hegelstad, Wenche; Auestad, Bjørn Henrik; Bramness, Jørgen Gustav; Evensen, Julie Horgen; Haahr, Ulrik; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; McGorry, Patrick; Friis, Svein.
The Effect of Substance Use on 10-Year Outcome in First-Episode Psychosis. Schizophrenia Bulletin 2017 ;Volum 43.(4) s. 843-851
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2016
35 Bjerke, Espen; Solbakken, Ole Andre; Friis, Svein; Monsen, Jon Trygve.
Self-Relatedness and Interpersonal Problems in a Large Psychiatric Outpatient Sample. PSYCHOLOGY 2016 ;Volum 7. s. 864-876
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36 Dahl, Hanne-Sofie Johnsen; Ulberg, Randi; Friis, Svein; Perry, John Christopher; Høglend, Per Andreas.
Therapists' inadequate feelings and long-term effect of transference work. Psychotherapy and Psychosomatics 2016 ;Volum 85.(5) s. 309-310
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37 Friis, Svein; Melle, Ingrid; Johannessen, Jan Olav; Røssberg, Jan Ivar; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas H..
Early Predictors of Ten-Year Course in First-Episode Psychosis.. Psychiatric Services 2016 ;Volum 67.(4) s. 438-443
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38 Furre, Astrid; Sandvik, Leiv; Friis, Svein; Knutzen, Maria; Hanssen-Bauer, Ketil.
A nationwide study of why and how acute adolescent psychiatric units use restraint. Psychiatry Research 2016 ;Volum 237. s. 60-66
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39 Gardsjord, Erlend Strand; Romm, Kristin Lie; Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Melle, Ingrid; Røssberg, Jan Ivar.
Subjective quality of life in first-episode psychosis. A ten year follow-up study. Schizophrenia Research 2016 ;Volum 172.(1-3) s. 23-28
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40 Guloksuz, Sinan; Li, Fangyong; Tek, Cenk; Woods, Scott W.; McGlashan, T.H.; Friis, Svein; Srihari, Vinod H..
Analyzing the duration of untreated psychosis: Quantile regression. JAMA psychiatry 2016 ;Volum 73.(10) s. 1094-1095
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41 Haahr, Ulrik Helt; Larsen, Tor Ketil; Simonsen, Erik; Rund, Bjørn Rishovd; Joa, Inge; Røssberg, Jan Ivar; Johannessen, Jan Olav; Langeveld, Johannes H.; Evensen, Julie Horgen; Trauelsen, Anne Marie; Vaglum, Per Jørgen Wiggen; Ilner, Stein E. Opjordsmoen; Hegelstad, Wenche; Friis, Svein; McGlashan, Thomas; Melle, Ingrid.
Relation between premorbid adjustment, duration of untreated psychosis and close interpersonal trauma in first-episode psychosis. Early Intervention in Psychiatry 2016 ;Volum 12.(3) s. 316-323
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42 Hegelstad, Wenche; Brønnick, Kolbjørn Selvåg; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein.
Preventing poor vocational functioning in psychosis through early intervention. Psychiatric Services 2016 ;Volum 68.(1) s. 100-103
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43 Kvåle, Alice; Bunkan, Berit Heir; Ilner, Stein E. Opjordsmoen; Friis, Svein.
The Global Body Examination (GBE): A useful instrument for examination of patients with long-lasting musculoskeletal and/or psychological disorders. European Journal of Physiotherapy 2016 ;Volum 18.(2) s. 137-143
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44 Nilsen, Liv; Frich, Jan C; Friis, Svein; Norheim, Irene; Røssberg, Jan Ivar.
Participants' perceived benefits of family intervention following a first episode of psychosis: A qualitative study. Early Intervention in Psychiatry 2016 ;Volum 10.(2) s. 152-159
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45 Rund, Bjørn Rishovd; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein.
Neurocognition and Duration of Psychosis: A 10-year Follow-up of First-Episode Patients. Schizophrenia Bulletin 2016 ;Volum 42.(1) s. 87-95
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46 Sønmez, Nasrettin; Røssberg, Jan Ivar; Evensen, Julie Horgen; Barder, Helene; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein.
Depressive symptoms in first-episode psychosis: A 10-year follow-up study. Early Intervention in Psychiatry 2016 ;Volum 10.(3) s. 227-233
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2015
47 Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein.
Ten year course of IQ in first-episode psychosis: relationship between duration of psychsis and long-term intellectual trajectories. Psychiatry Research 2015 ;Volum 225.(3) s. 515-521
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48 Bendiksen, Bothild; Aase, Heidi; Diep, Lien My; Svensson, Elisabeth; Friis, Svein; Zeiner, Pål.
The Associations Between Pre- and Postnatal Maternal Symptoms of Distress and Preschooler's Symptoms of ADHD, Oppositional Defiant Disorder, Conduct Disorder, and Anxiety. Journal of Attention Disorders 2015 s. -
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49 Friis, Svein.
How to help clinically relevant research survive?. Acta Psychiatrica Scandinavica 2015 ;Volum 132.(6) s. 439-440
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50 Friis, Svein.
Skjerming – straff eller støtte?. Tidsskrift for Den norske legeforening 2015 ;Volum 135.(1) s. 8-8
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