why can't we cure cancer
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why can't we cure cancer
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why hasn't cancer been cured
why can't we cure cancer, why can't we find a cure for cancer, why there is no cure for cancer, why have we not cured cancer, why is it difficult to cure cancer, why is cancer so difficult to cure, why is it hard to cure cancer, why cancer has no cure, why cancer is hard to cure, why cancer will never be cured, why hasn't cancer been cured