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Bernard M, Grothues-Spork M, Georgoulis A, Hertel P.Bernard M, et al. Among authors: georgoulis a.Knee Surg Sports Traumatol Arthrosc. 1994;2(1):14-8. doi: 10.1007/BF01552648.Knee Surg Sports Traumatol Arthrosc. 1994.PMID: 7584170