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Howlett KF, Watt MJ, Hargreaves M, Febbraio MA.Howlett KF, et al. Among authors: febbraio ma.Metabolism. 2003 Dec;52(12):1615-20. doi: 10.1016/s0026-0495(03)00330-5.Metabolism. 2003.PMID: 14669166Clinical Trial.