RETRACTED: Co-occurring disorder clusters in adults with mild and moderate intellectual disability in residential treatment settings.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor in Chief, after review by an independent panel of experts, due to evidence of a compromised peer review process and lack of original methodology. An independent peer-review process is a cornerstone of scientific integrity that allows for research to be scrutinized before publication to ensure that conclusions are anchored in sound methodology and objective interpretation of the results. Also, one of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. This article is being retracted because it duplicates significant parts of a paper that had already appeared in Research in Developmental Disabilities 35 (2014) 1802-1808 http://dx.doi.org/10.1016/j.ridd.2014.01.027. Also, evidence indicates that the paper was accepted without any independent peer review by external reviewers. The article is therefore retracted in accordance with the ethical guidelines of Elsevier: https://www.elsevier.com/about/policies/publishing-ethics and the Committee on Publication Ethics (COPE) https://publicationethics.org/files/retraction-guidelines.pdf.