Doctors are treating Nicola's mother, her three brothers, her sister and her nephew for Osteogenesis Imperfecta - or OI - a genetic mutation which gives the sufferer frail bones.

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Nicky now realises she does have some signs of OI: poor, pearly or translucent teeth, a greyish tinge to her eyes which look similar to her brother, Wayne, who has been diagnosed as suffering OI, and loose joints.

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