Media type: E-Article Title: How impaired are children and adolescents by mental health problems? Results of the BELLA study Contributor: Wille, Nora; Bettge, Susanne; Wittchen, Hans-Ulrich; Ravens-Sieberer, Ulrike Published: Springer Science and Business Media LLC, 2008 Published in: European Child & Adolescent Psychiatry, 17 (2008) S1, Seite 42-51 Language: English DOI: 10.1007/s00787-008-1005-0 ISSN: 1018-8827; 1435-165X Keywords: Psychiatry and Mental health ; Developmental and Educational Psychology ; General Medicine ; Pediatrics, Perinatology and Child Health Origination: Footnote: