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"Baffled scientists had been struggling to come up with a reason for the high proportion of twins in the tiny Brazilian town of Candido Godoi -- most of them blond-haired and blue-eyed... The residents of the Brazilian town claim Mengele made repeated visits there in the early 1960s. He first claimed to be a vet but then offered medical treatment to the women, providing them with strange potions and tablets and asking for blood samples."