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Havre SL, Singhal M, Payne DA, Lipton MS, Webb-Robertson BJ.Havre SL, et al.IEEE Eng Med Biol Mag. 2005 May-Jun;24(3):50-7. doi: 10.1109/memb.2005.1436460.IEEE Eng Med Biol Mag. 2005.PMID: 15971841