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Jung M, Soydan N, Rubbert F, Wetzel WE.Jung M, et al. Among authors: wetzel we.J Clin Periodontol. 2005 Jun;32(6):604-9. doi: 10.1111/j.1600-051X.2005.00719.x.J Clin Periodontol. 2005.PMID: 15882218
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