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Hagel BE, Meeuwisse WH, Mohtadi NG, Fick GH.Hagel BE, et al.Clin J Sport Med. 1999 Jan;9(1):9-17. doi: 10.1097/00042752-199901000-00003.Clin J Sport Med. 1999.PMID: 10336046
Hagel BE, Russell K, Goulet C, Nettel-Aguirre A, Pless IB.Hagel BE, et al.Am J Epidemiol. 2010 May 15;171(10):1134-43. doi: 10.1093/aje/kwq039. Epub 2010 Apr 20.Am J Epidemiol. 2010.PMID: 20406762
Emery CA, Kang J, Shrier I, Goulet C, Hagel BE, Benson BW, Nettel-Aguirre A, McAllister JR, Hamilton GM, Meeuwisse WH.Emery CA, et al. Among authors: hagel be.JAMA. 2010 Jun 9;303(22):2265-72. doi: 10.1001/jama.2010.755.JAMA. 2010.PMID: 20530780