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Raza, S.B., Patterson, R.P. & Wang, L. Filtering respiration and low-frequency movement artefacts from the cardiogenic electrical impedance signal. Med. Biol. Eng. Comput. 30, 556–561 (1992). https://doi.org/10.1007/BF02457837
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DOI: https://doi.org/10.1007/BF02457837