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Siegrist BE, Brecx MC, Gusberti FA, Joss A, Lang NP.Siegrist BE, et al. Among authors: brecx mc.Clin Oral Implants Res. 1991 Jan-Mar;2(1):38-46. doi: 10.1034/j.1600-0501.1991.020105.x.Clin Oral Implants Res. 1991.PMID: 1807421