"It's human frailty, " says Carol Haraden, a vice president at the Institute for Healthcare Improvement, which several years ago started an effort to reduce the toll from medical mistakes.
These events indicate an already recognized pattern of misjudgment which spans several years and administrations.
You can understand why the Federal Reserve Board is so invested in keeping interest rates near zero for the foreseeable future which is several years to come.
There's also a severe backlog in gun license applications, some of which date back several years.
If the Pentagon does slow the huge building and deployment program, which was ordered several years ago by then-Defense Secretary Robert Gates, it won't affect the CIA drone strikes in Pakistan, Yemen and elsewhere against terror suspects.
The story of Echo Taps, which took place several years ago on Armed Forces Day, was an amazing undertaking and ultimately an act of respect for the men and women who have acted on our behalf since before we were a country, giving, serving and dying for the freedom we enjoy today.
Both before and after Mr. Thompson's hiring at Yahoo, the incorrect biographical information was used repeatedly in descriptions of him in the press, on the website of a company whose board he sits on, on Yahoo's own website, and in connection with at least one conference at which he spoke several years ago.
Footage of these experiments, which were conducted over several years, is poignant, as the kids struggle to delay gratification for just a little bit longer.
At a news conference at the Vatican, Father Lombardi confirmed that the batteries in the pacemaker, which had been fitted several years ago, had been replaced in the routine operation.
Microsoft disputes this, pointing to a company-funded study which found that over several years Linux servers were no cheaper to run than Windows servers, largely because Linux experts demand higher wages.
Nearly all mainstream newspapers in the UK have been facing up to a "triple whammy" which has continued for several years - a combination of falling sales, falling advertising revenue and rising costs.
But the city already has a smaller high-tech park which has been incubating small companies for several years and is now attracting big hitters like Microsoft, which has opened a research center here, and US videoconferencing company WebEx.
Those products, which have been available for several years, are designed mostly for the Java programming language, he adds.
Miss Godden's remains, which had been there for several years, were incomplete with the skull, arms and feet not present.
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He subsequently determined that the payments should be tax exempt and filed refund claims for several open years which were allowed.
Meanwhile, Asia's openness to global money flows, which is in fact just several years old for most of the region's economies, is increasingly under question.
Nonetheless its downturn was shorter and less severe and it has already surpassed its pre-crisis peak (something which will take Latvia several more years).
But his diary, which he had maintained for several years, was saved on one of his laptops, and Gibson, Dunn found it on his hard drive.
Doctors later diagnosed her with major depressive disorder due to the incident and prescribed her medication for several years, which she took until she got married.
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Fluenz is a live attenuated - weakened - intranasal vaccine, which has been used for several years in the United States under the brand name FluMist.
That figure is expected to rise to 8.4m by 2008, partly thanks to the knock-on effects of the Sydney Olympics, which should boost numbers for several years to come.
The temptation for companies is to book revenues from swapping capacity upfront, but to label the cost of acquiring it as capital expenditure which is written down over several years.
The smashed wall is displayed in the corner of a room, which has been made to look like the garage in which it was stored for several years after being cut down.
Margo Wilson and Martin Daly, famous for a study several years ago which showed that children are far more likely to be killed by step-parents than biological parents, tend to look at things from a Darwinian point of view.
So instead I see the challenge, which I adopted for myself several years ago, is to gradually learn to identify the moments of choice in your life and then to try to apply principles to those choices, principles like doing the least harm.
The investigation is ongoing, but one of the risks (and these vary by state) this company faces is if it is found that the contractor was misclassified, the company could be required to pay lost benefits going back several years, which really adds up.
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You see, I expect the prices of my shares to fluctuate in value throughout my ownership period, which in most cases is several years, and so I only consider selling my shares if there is a fundamental negative change in the company's prospects or share prices become irrationally overvalued.
Because it takes several years for the companies in which venture capitalists invest to exit, the number of exits is best measured against the number of companies backed several years earlier.
It was the cheapest option besides subsidized housing, which had a waiting list of several years.
That could give the economy, which is only just recovering from several years of sluggish growth, a much-needed kick.
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