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Brägger U, Hämmerle CH, Mombelli A, Bürgin W, Lang NP.Brägger U, et al. Among authors: hammerle ch.J Clin Periodontol. 1992 Oct;19(9 Pt 1):615-24. doi: 10.1111/j.1600-051x.1992.tb01708.x.J Clin Periodontol. 1992.PMID: 1430288
Lang NP, Mombelli A, Tonetti MS, Brägger U, Hämmerle CH.Lang NP, et al. Among authors: hammerle ch.Ann Periodontol. 1997 Mar;2(1):343-56. doi: 10.1902/annals.1997.2.1.343.Ann Periodontol. 1997.PMID: 9151566Review.
Lang NP, Mombelli A, Brägger U, Hämmerle CH.Lang NP, et al. Among authors: hammerle ch.Periodontol 2000. 1996 Oct;12:60-8. doi: 10.1111/j.1600-0757.1996.tb00083.x.Periodontol 2000. 1996.PMID: 9567996Review.No abstract available.