Lord McAlpine, who announced he was dropping defamation claims against Twitter users with less than 500 followers, said he wanted to draw the "unfortunate episode" to a close.
He has written to those tweeters and asked them to make a voluntary donation of £25 to the BBC's Children In Need as soon as possible.
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Mr Kim has made two recent visits to China.
The study looked at the development of 422 children over the course of eight years.
The president said they will come into force if China refuses to change its practices.