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3. Gouaux F., et al. (2002). Ambient Intelligence and Pervasive Systems for the Monitoring of Citizens at Cardiac Risk: New Solutions from the EPI-MEDICS Project Computers in Cardiology 29, 289–292.
4. IEC 60601-2-25 (ed. 1999). Medical electrical equipment: Particular requirements for the safety of electrocardiographs.
5. IEC 60601-2-27 (ed. 1994). Medical electrical equipment: Particular requirements for the safety electrocardiographic monitoring equipments.