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Gustafsson A, Asman B, Bergström K, Söder PO.Gustafsson A, et al.J Clin Periodontol. 1992 Sep;19(8):535-40. doi: 10.1111/j.1600-051x.1992.tb00680.x.J Clin Periodontol. 1992.PMID: 1447377
Gustafsson A, Asman B, Bergström K.Gustafsson A, et al.J Clin Periodontol. 1994 Jan;21(1):17-21. doi: 10.1111/j.1600-051x.1994.tb00270.x.J Clin Periodontol. 1994.PMID: 7510313
Gustafsson A, Asman B, Bergström K.Gustafsson A, et al.J Clin Periodontol. 1995 Mar;22(3):225-8. doi: 10.1111/j.1600-051x.1995.tb00138.x.J Clin Periodontol. 1995.PMID: 7790528