| http://www.w3.org/ns/prov#value | - If you use autopsy as the gold standard or venography plus IVUS as the gold standard the results would be very different.Moreover, the gold standard criteria of venography that were used were 1. flow disturbance2. greater than 50% stenosis.the signs of flow disturbance, such as reflux, stasis and collateral visualization, is very subjective and depends upon rate and pressure of contrast injection
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