| 1 | Now, scientists say, these results will stimulate a lot of work on what other chemical replacements might be possible. | |
| 2 | For example, hip and knee replacements, and cataract surgery, are far more readily available in the US than in Europe. | |
| 3 | Improvements in artificial joint technology and surgical techniques mean replacements are lasting longer than ever - often 20 years or more. | |
| 4 | The doctors said the president used medication to try toease the pangs, they described it as "nicotine replacement therapy, self-use". | |
| 5 | Boeing will deliver the replacement wing sets to Hill Air Force Base, Utah, in four parts: three wing sections and an installation kit. |
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