http://www.w3.org/ns/prov#value | - A method of providing pace signals to a patient and including the steps of:positioning an elongate probe having a longitudinal axis in the patient's esophagus, positioning a first electrode on said probe at a location where the patient's esophagus is directly behind the left atrium, positioning a second electrode in said esophagus at a position where said esophagus is directly behind the patient's
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