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Brägger U, Håkanson D, Lang NP.Brägger U, et al. Among authors: lang np.J Clin Periodontol. 1992 Oct;19(9 Pt 1):659-66. doi: 10.1111/j.1600-051x.1992.tb01715.x.J Clin Periodontol. 1992.PMID: 1430294
Brägger U, Schürch E Jr, Salvi G, von Wyttenbach T, Lang NP.Brägger U, et al. Among authors: lang np.Cleft Palate Craniofac J. 1992 Mar;29(2):179-85. doi: 10.1597/1545-1569_1992_029_0179_pciapw_2.3.co_2.Cleft Palate Craniofac J. 1992.PMID: 1571353
Joss A, Weber HP, Gerber C, Siegrist B, Curilović Z, Saxer UP, Lang NP.Joss A, et al. Among authors: lang np.Schweiz Monatsschr Zahnmed. 1992;102(5):541-8.Schweiz Monatsschr Zahnmed. 1992.PMID: 1598554
Hämmerle CH, Joss A, Lang NP.Hämmerle CH, et al. Among authors: lang np.J Clin Periodontol. 1991 Apr;18(4):233-9. doi: 10.1111/j.1600-051x.1991.tb00420.x.J Clin Periodontol. 1991.PMID: 1856303
Schürch E Jr, Bürgin WB, Lang NP, Geering AH, Uvira R, Stiefel S, Minder CE.Schürch E Jr, et al. Among authors: lang np.Schweiz Monatsschr Zahnmed. 1991;101(11):1393-8.Schweiz Monatsschr Zahnmed. 1991.PMID: 1962162German.
Schürch E Jr, Minder CE, Lang NP, Geering AH.Schürch E Jr, et al. Among authors: lang np.Schweiz Monatsschr Zahnmed. 1990;100(4):408-11.Schweiz Monatsschr Zahnmed. 1990.PMID: 2343283
Brägger U, Nyman S, Lang NP, von Wyttenbach T, Salvi G, Schürch E Jr.Brägger U, et al. Among authors: lang np.J Clin Periodontol. 1990 Jul;17(6):379-84. doi: 10.1111/j.1600-051x.1990.tb00034.x.J Clin Periodontol. 1990.PMID: 2398135