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Research Article

Effective Group Training for Patients with Unexplained Physical Symptoms: A Randomized Controlled Trial with a Non-Randomized One-Year Follow-Up

  • Lyonne N. L. Zonneveld mail,

    L.Zonneveld@amc.uva.nl

    Affiliations: Department of Medical Psychology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Anesthesiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Medical Psychology and Psychotherapy, Erasmus Medical Center, Rotterdam, The Netherlands

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  • Yanda R. van Rood,

    Affiliation: Department of Psychiatry, Leiden University Medical Centre, Leiden, The Netherlands

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  • Reinier Timman,

    Affiliation: Department of Medical Psychology and Psychotherapy, Erasmus Medical Center, Rotterdam, The Netherlands

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  • Cornelis G. Kooiman,

    Affiliation: Department of Psychotherapy, Riagg Rijnmond, Schiedam, The Netherlands

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  • Adriaan van't Spijker,

    Affiliation: Department of Medical Psychology and Psychotherapy, Erasmus Medical Center, Rotterdam, The Netherlands

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  • Jan J. V. Busschbach

    Affiliation: Department of Medical Psychology and Psychotherapy, Erasmus Medical Center, Rotterdam, The Netherlands

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  • Published: August 07, 2012
  • DOI: 10.1371/journal.pone.0042629

About the Authors

Lyonne N. L. Zonneveld
Department of Medical Psychology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
Lyonne N. L. Zonneveld
Department of Anesthesiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
Lyonne N. L. Zonneveld, Reinier Timman, Adriaan van't Spijker, Jan J. V. Busschbach
Department of Medical Psychology and Psychotherapy, Erasmus Medical Center, Rotterdam, The Netherlands
Yanda R. van Rood
Department of Psychiatry, Leiden University Medical Centre, Leiden, The Netherlands
Cornelis G. Kooiman
Department of Psychotherapy, Riagg Rijnmond, Schiedam, The Netherlands

Corresponding Author

Email: L.Zonneveld@amc.uva.nl

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LZ. Performed the experiments: LZ. Analyzed the data: RT LZ YvR CK AvtS JB. Contributed reagents/materials/analysis tools: LZ. Wrote the paper: LZ YvR RT CK AvtS JB.