Dr. Ian Hood says 41-year-old injuries caused the death of Officer Walter Barclay. Hood's testimony continued Wednesday at the trial of 74-year-old William Barnes, who already served time for attempted murder in the case.
Hood acknowledged under cross-examination that he has testified on behalf of just one criminal defendant in his entire career. He said he testified for the prosecution 2,000 times over 20 years.
But Hood says he relies only on medical evidence and he's not biased.
Barclay was paralyzed when Barnes shot him in 1966. Hood says that injury ultimately killed Barclay in 2007.
