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Colombani PC, Kovacs E, Frey-Rindova P, Frey W, Langhans W, Arnold M, Wenk C.Colombani PC, et al.Int J Sport Nutr. 1999 Jun;9(2):181-201. doi: 10.1123/ijsn.9.2.181.Int J Sport Nutr. 1999.PMID: 10362454Clinical Trial.