A Froholdt, O. E Olsen and R. Bahr
The American Journal of Sports Medicine 37 ( 6 ): 1155 - 1160 , 2009
A. H Engebretsen, G Myklebust, I Holme, L Engebretsen and R. Bahr
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B Clarsen, T Krosshaug and R. Bahr
The American Journal of Sports Medicine 38 ( 12 ): 2494 - 2501 , 2010