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Sir Paul McCartney is urging fans to mark his birthday by sending donations to a cancer charity.

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The Beatles legend turns 71 on Tuesday, and he decided to mark the occasion by launching a fundraising initiative to aid Britain's The Royal Marsden Cancer Charity, an organization which helps the London hospital of the same name provide vital care.

A post on McCartney's Twitter page, reads, "I have used my birthday to raise money for (The Royal Marsden)! Give a gift and donate to help cancer patients."

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A message published on McCartney's fundraising web page adds, "I'm donating my birthday for The Royal Marsden Cancer Charity because they make life better for people with cancer. ... Please give them a gift on my birthday."

McCartney's first wife, Linda, died after a battle with breast cancer in 1998.

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