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Höflich A, Meyer F, Matzat J, Hartmann S, Lotzemer-Jentges A, Bleichner F, Knickenberg RJ, Beutel ME.Höflich A, et al. Among authors: beutel me.Z Psychosom Med Psychother. 2005;51(4):373-87. doi: 10.13109/zptm.2005.51.4.373.Z Psychosom Med Psychother. 2005.PMID: 16402335German.