Dr Gregory said there was a basic three-step procedure for dealing with the effects of an ankle bone spur, technically called a "posterior impingement".

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There is also the small matter of the Gregory's Girl sequel he made in 1999.

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"I think it's too early to say whether there will or won't be, " Gregory said.

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"There is no safety net, " said Dan Gregory, 64 years old, who farms more than 2, 000 acres of cherries and apples in Suttons Bay, near an inlet on Lake Michigan.

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"The advancements that they have on this DNA technology, with all this going on, why can't someone re-open it, to look into it and see if there is something that can be done, " Gregory said.

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"There is way too little information, " WHO spokesman Gregory Hartl said.

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There were three rival claimants to the papal throne at that time - the Roman Pope Gregory XII, the Avignon Pope Benedict XIII, and the Antipope John XXIII.

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Authorities there have said they want to talk to McAfee about the November 11 shooting of his neighbor, American businessman Gregory Faull.

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