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Al-Jadaa A, Paqué F, Attin T, Zehnder M.Al-Jadaa A, et al. Among authors: zehnder m.Int Endod J. 2009 Jan;42(1):59-65. doi: 10.1111/j.1365-2591.2008.01497.x.Int Endod J. 2009.PMID: 19125981Free article.