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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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