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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Top down view of Olympus Mons, the highest known mountain in the solar system Top down view of Olympus Mons, the highest known mountain in the solar system
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
Selected skeletal muscles and the Achilles tendon (posterior view). Selected skeletal muscles and the Achilles tendon (posterior view).
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Anterior View of the Spinal Column Showing Anterior and Posterior Longitudinal Ligaments Anterior View of the Spinal Column Showing Anterior and Posterior Longitudinal Ligaments
The Thoracic Vertebrae: Superior View of Vertebra The Thoracic Vertebrae: Superior View of Vertebra
Video: Exercise and cardiac output

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