Reacting to the retrial, Amanda Knox says it is "painful" to have acquittal overturned, but "confident" in the truth.
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The drugs are used to control both pain and inflammation, and are commonly taken by people with arthritis.
The veteran singer, 75, will release his 101st album - 'News of Just ... Fabulous Rock 'n' Roll' - in November.
The Duke and Duchess of Cambridge were left cautiously watching every step after making an impromptu visit aboard a steam train.