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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

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The horizontal fraction bar was introduced by the Arabs.

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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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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

External and cross-sectional view of an infarct caused by a myocardial infarction. External and cross-sectional view of an infarct caused by a myocardial infarction.
External and internal male genitalia. External and internal male genitalia.
External beam radiotherapy. External beam radiotherapy.
Internal and External Environment Internal and External Environment
Internal and External Loci of Control Internal and External Loci of Control
External Anatomy of the Spinal Cord External Anatomy of the Spinal Cord
Video: Control of ventilation rate by other brain centers (posts, hypothalamus & cerebral cortex)

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