It can include oral testimony of witnesses, including experts on technical matters, documents, public records, objects, photographs and depositions (testimony under oath taken before trial).

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But large-scale efforts to computerise health records tend to run into bureaucratic, technical and ethical problems.

ECONOMIST: Technology

One little technical problem: aside from captive provider systems with electronic medical records like Kaiser, not a single insurer I know of in the US has any ability to affect this scandalously high rate of often unnecessary, always expensive, high-volume surgery.

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