| http://www.w3.org/ns/prov#value | - A method for determining variation of S-T segment parameters using multiple cardiac electrogram signal vectors for determining physiological conditions such as ischemia is generally disclosed in U.S. Pat. No. 6,128,526 issued to Stadler et al., and in U.S. Pat. No. 6,397,100 issued to Stadler et al. [0009] A different approach to modulating cardiac contractility involves application of non-excitat
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