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What is abcd?

Author: Nebojsa Jevtovic

Correct answers: 100

The first user who solved this task is Djordje Timotijevic.

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Surgery on CCTV

In 1947, the first closed-circuit broadcast of a surgical operation showed procedures to observers in classrooms. Dr. Alfred Blalock, at Johns Hopkins Hospital, Baltimore, Md., demonstrated two operations on the heart. Two more heart operations were also seen, and one on nerves of the spine.

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