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12. Na front

15. [World War II]

32. Difference phases of a heart operation. 12743: The machine that circulates blood to the vessels in the heart and brain during the operation while the heart itself is stopped. 12745: reconnecting the arteries by sewing together with a device developed in the Soviet Union several years ago ans since adopted by cardiac surgeons all over the world. 12744: after the operation an electric stimulator is applied in the heart area to start a regular beat