"One of the victims was in hospital for seven days, where they had two operations, including skin grafts and plastic surgery, " he added.

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Hamish Laing, honorary secretary of the British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS) and consultant plastic surgeon at the Welsh Centre for Burns and Plastic Surgery, said it was a novel idea to make artificial skin that would not only cover the wound but actively fight infection.

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