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Everyone has one nostril that is larger than the other.

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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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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.

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Excessive alcohol use costs the country approximately $235 billion every year.

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