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In China up to 70,000 youngsters are reported missing each year.
Earlier this month, parents from all over China made their way to Beijing, brandishing posters of their lost loved ones.
The protest was organised by a website called Baby Come Home which helps parents find their missing children.
It was called to urge the government to take action, to make it easier for parents to trace their children and to eradicate child trafficking.
One person who was helped by Baby Come Home was Christian. He went missing when he was six. Twelve years later with the help of his American adoptive mother Julia Norris, he traced his parents only to discover they had been looking for him since he had gone missing.
Outlook's Jo Fidgen spoke to Julia Norris about her first meeting with Christian, the devastating effect of his loss on the family, and their emotional but difficult reunion.
First broadcast 19 October 2010
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