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Fritzsche K, Armbruster U, Hartmann A, Wirsching M; General Practitioners A cross-sectional trial.Fritzsche K, et al.BMC Psychiatry. 2002 May 8;2:5. doi: 10.1186/1471-244x-2-5.BMC Psychiatry. 2002.PMID: 12000687Free PMC article.
Fritzsche K, Burghard HM, Schweickhardt A, Wirsching M.Fritzsche K, et al.Z Psychosom Med Psychother. 2006;52(1):4-22.Z Psychosom Med Psychother. 2006.PMID: 16740228Review.German.
Schweickhardt A, Larisch A, Wirsching M, Fritzsche K.Schweickhardt A, et al. Among authors: fritzsche k.Psychother Psychosom. 2007;76(6):339-46. doi: 10.1159/000107561.Psychother Psychosom. 2007.PMID: 17917469Clinical Trial.
Fritzsche K, Schäfer I, Wirsching M, Leonhart R.Fritzsche K, et al.Z Psychosom Med Psychother. 2012;58(2):142-57. doi: 10.13109/zptm.2012.58.2.142.Z Psychosom Med Psychother. 2012.PMID: 22786844German.
Fritzsche K, Sandholzer H, Werner J, Brucks U, Cierpka M, Deter HC, Härter M, Höger C, Richter R, Schmidt B, Wirsching M.Fritzsche K, et al.Psychother Psychosom Med Psychol. 2000 Jun;50(6):240-6. doi: 10.1055/s-2000-13252.Psychother Psychosom Med Psychol. 2000.PMID: 10909296German.