The most valuable and irrevocable thing for a human being is health. Centuries ago millions of people used to die from numerous simple diseases.
The most valuable and irrevocable thing for a human being is health. Centuries ago millions of people used to die from numerous simple diseases. In the modern world, however, there are almost no incurable ones.
A lot of problems are diagnosed by ultrasound examination. Electrons, discovered by Pierre and Jacques Curie in 1880, became the basis for ultrasound examination.
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