Protocol for a randomized controlled trial comparing the Circle of Security-parenting (COS-P) with treatment as usual in child mental health services

• Aida Bikic ,

  Roles Conceptualization, Funding acquisition, Investigation, Methodology, Writing – original draft

  * E-mail: abikic@health.sdu.dk

  Affiliations Child and Adolescent Mental Health Services Southern Jutland, Aabenraa, Region of Southern Denmark, Denmark, Department of Regional Health Research, Faculty of Health, University of Southern Denmark, Odense C, Denmark

  https://orcid.org/0000-0002-6393-4084

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• Johanne Smith-Nielsen,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Department of Psychology, Centre for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark

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• Søren Dalsgaard,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliations Department of Economics and Business, National Centre of Register-Based Research, Aarhus University, Aarhus, Denmark, Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark, Department of Child and Adolescent Psychiatry, Mental Health Services of the Capital Region, Glostrup, Denmark

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• James Swain,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Department of Psychiatry and Behavioral Health, and Psychology, Stony Brook University, Stony Brook, NY, United States of America

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• Peter Fonagy,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Department of Clinical, Educational and Health Psychology, University College London, London, United Kingdom

  https://orcid.org/0000-0003-0229-0091

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• James F. Leckman

  Roles Conceptualization, Funding acquisition, Methodology, Writing – review & editing

  Affiliation Child Study Centre, Yale University School of Medicine, New Haven, Connecticut, United States of America

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