Changing the way women are tested for cervical cancer from a smear to a urine test "provides a simple method" all women can use, an expert in women's health has said.
Queen Mary University's Dr Neha Pathak told Good Morning Britain: "This provides a simple method - that they can just pee into a pot and send that off."
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Stephen Barclay says Mr Tusk is clearly opposed to Brexit.
It is the start of the couple’s third tour to the country.
He said this means voters can be certain his party will deliver Brexit.