| http://www.w3.org/ns/prov#value | - a defibrillation unit capable of delivering a defibrillation pulse; one or more defibrillation electrodes for delivering the defibrillation pulse; and packaging associated with the electrodes; wherein the electrodes hay a limited shelf life and wherein an expiration date or other marking indicative of expiration or failure of the electrodes is marked on the electrodes or packaging; wherein the ele
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