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Karl M, Graef F, Wichmann M.Karl M, et al. Among authors: wichmann m.Int J Prosthodont. 2011 Sep-Oct;24(5):479-81.Int J Prosthodont. 2011.PMID: 21909492
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Karl M, Graef F, Eitner S, Beck N, Wichmann M, Holst S.Karl M, et al. Among authors: wichmann m.Eur J Dent Educ. 2007 Feb;11(1):38-41. doi: 10.1111/j.1600-0579.2007.00432.x.Eur J Dent Educ. 2007.PMID: 17227394Clinical Trial.