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Who verifies 'oldest person'?
The Gerontology Research Group (GRG) is a global network of researchers who verify the ages of supercentenarians, people aged 110 or older. They meticulously check birth certificates, census records, and other documents to ensure accuracy. This is how Ethel Caterham's status as the world's oldest person was officially recognised, allowing her to celebrate her 117th birthday with this special title.
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