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Mühlbauer M, Trnka HJ, Zembsch A, Ritschl P.Mühlbauer M, et al. Among authors: ritschl p.Z Orthop Ihre Grenzgeb. 1999 Sep-Oct;137(5):452-6. doi: 10.1055/s-2008-1037390.Z Orthop Ihre Grenzgeb. 1999.PMID: 10549125German.
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