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Persson-Bunke M, Hägglund G, Lauge-Pedersen H.Persson-Bunke M, et al. Among authors: hagglund g.J Pediatr Orthop B. 2006 Sep;15(5):335-8. doi: 10.1097/01202412-200609000-00006.J Pediatr Orthop B. 2006.PMID: 16891960