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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

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

A Royal Bengal Tiger, the largest big cat in Bannerghatta National Park, India A Royal Bengal Tiger, the largest big cat in Bannerghatta National Park, India
Cairns Birdwing (Ornithoptera euphorion): Australia's largest endemic butterfly Cairns Birdwing (Ornithoptera euphorion): Australia's largest endemic butterfly
Largest Predators Largest Predators
An example of an EHR screen used to order a laboratory test. An example of an EHR screen used to order a laboratory test.
U.S. adults from 25 to 74 years report that the largest proportion of their daily stressors arise ... U.S. adults from 25 to 74 years report that the largest proportion of their daily stressors arise ...
The order of gene transfer in four Hfr strains The order of gene transfer in four Hfr strains
Video: Mendel's pea plant, Pisum sativum experimental

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