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Rogers IR, Hook G, Stuempfle KJ, Hoffman MD, Hew-Butler T.Rogers IR, et al. Among authors: hoffman md.Clin J Sport Med. 2011 May;21(3):200-3. doi: 10.1097/JSM.0b013e31821a6450.Clin J Sport Med. 2011.PMID: 21519296Clinical Trial.