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[Secondary synovial chondromatosis of the ankle joint].
Wiedemann NA, Friederichs J, Richter U, Bühren V. Wiedemann NA, et al. Among authors: friederichs j. Orthopade. 2011 Sep;40(9):807-11. doi: 10.1007/s00132-010-1706-1. Orthopade. 2011. PMID: 21104226 German.
Surgical treatment of ipsilateral multi-level femoral fractures.
von Rüden C, Tauber M, Woltmann A, Friederichs J, Hackl S, Bühren V, Hierholzer C. von Rüden C, et al. Among authors: friederichs j. J Orthop Surg Res. 2015 Jan 24;10:7. doi: 10.1186/s13018-014-0149-5. J Orthop Surg Res. 2015. PMID: 25616698 Free PMC article.
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