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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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The horizontal fraction bar was introduced by the Arabs.

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Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Changes in bronchioles during an asthma attack: (A) normal bronchiole and (B) in asthma attack. Changes in bronchioles during an asthma attack: (A) normal bronchiole and (B) in asthma attack.
Finger pressure to a trigger point. Finger pressure to a trigger point.
Use of the elbow to apply pressure to trigger points in the trapezius with the receiver in sitting ... Use of the elbow to apply pressure to trigger points in the trapezius with the receiver in sitting ...
Varieties of Trigger Points Varieties of Trigger Points
Video: Appendicitis Animation

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