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London - A South African couple living in London have two sets of twins, born four years apart on Mandela Day, July 18. according to the Sunday Times.
Frederik Hefer, 30, and his wife, Kim, 29, have four boys.
Twins Devon and Logan were born six weeks ago in a Cambridgeshire hospital by Caeserian section on July 18.
They share a birthday with four-year-old twins Tristan and Blake, who were born in South Africa.
According to the Hefers, there was a one-in-30-million chance of such a situation occurring, the weekly reported. - Sapa