Dr George Schmid, a specialist in HIV at the World Health Organization, said it could take many years to determine whether the technique was safe and effective, but he said the results were "encouraging".
Furthermore, it will be many years before anyone knows whether the government's extra spending on education bears any fruit in improving work opportunities for the poorest children.
Many critics have focused on funding, and whether the project would hold the public's attention for many years.
Five years ago, many questioned whether people could ever return to this city.
The last few years he worked up to that point would be the final years used to decide what his pension payout would be, regardless of how many more years he worked or whether he got another salary increase.
But, while organizers remain hopeful, it is unclear whether the recession will affect how many fans will show up and whether they will spend as lavishly as in past years.
There is now a keen awareness to provide safe environments for all children in the care of the Church whether it's for a few hours or many years.
Walking through the vibrant New Orleans of today, it is easy to forget that just a few years ago, many people wondered whether the city was even salvageable.
Whether the relationship lasts 30 minutes, a day, or many years, employees who succeed in providing a remarkable experience make every single interaction matter.
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Anyway it may well be many years before we have a clear view of whether the regulators who permitted banks to hold far too little capital during the boom have subsequently moved too fast or too slowly in forcing them to raise more capital subsequently.
U.S. researchers are being encouraged to work closely with government officials at the rationing board in England (the National Institute for Health and Clinical Excellence or NICE), which has many years of experience with QALY measurements in determining whether or not the government will pay for certain treatments.
"We have been asked over the many years we've been in operation as to whether or not we would allow these shorter domain names, " Eleanor Bradley, Nominet's director of operations, told the BBC.
But a big part of my business for many years has been protecting rich, famous clients ... whether they're stars or the chairmen of companies or organizations.
But with all of the indices at or near new all-time highs (save for the Nasdaq, perennially in the shadow of its mania highs north of 5000), many are beginning to wonder whether or not the secular bear that began 13 years ago has finally been slain.
The parties return to court on August 13th, but the lawsuit will undoubtedly drag on for many months if not years until the issue of whether these two purported wills are valid is laid to rest.
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It is far from clear whether many of Europe's people will be prepared to take the German medicine, which involves years of austerity.
Given that many people die within five years of having kidney cancer I'm left wondering whether I'll be one of them or whether I'll have a bit more time.
Whether you are retired now or on the cusp of retirement, your savings has been built over many years of toil and saving to provide or supplement your income during retirement.
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Many minority communities -- whether in big cities or rural towns -- had seen businesses and opportunities vanish for years, stores boarded up, young people hanging out on the street corners without prospects for the future.
The question of whether central banks should be involved in bank supervision is an old chestnut that central bankers and academics have debated for many years and practice in the years before the global financial crisis had swung towards separate bank regulators.
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