labour�s new study is based on freedom of information data from 95 english nhs trust..
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in december 1972, robert and helen celebrated the birth of their only child together, son derek..
the study used data of 1,082 ct scans of stroke patients across 70 hospitals in britain..
mrs cavanagh, from foyle park in londonderry, had a complex medical history of chronic heart and renal failure..
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