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Grötz KA, Piepkorn B, Bittinger F, Reichert TE, Duschner H, de Aguiar EG, Kann P, Wagner W.Grötz KA, et al. Among authors: kann p.Mund Kiefer Gesichtschir. 1998 May;2(3):141-5. doi: 10.1007/s100060050049.Mund Kiefer Gesichtschir. 1998.PMID: 9658804German.
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Kann P, Jocham A, Beyer J.Kann P, et al.Dtsch Med Wochenschr. 1997 Nov 7;122(45):1392-7. doi: 10.1055/s-2008-1047777.Dtsch Med Wochenschr. 1997.PMID: 9410717Review.German.No abstract available.