News that the Duke and Duchess of Cambridge are expecting their first baby has sparked a frenzy among the media and well-wishers.
Their focus is firmly fixed on the King Edward VII Hospital in Marylebone - a favourite with generations of the Royal Family.
Paul Brand has been speaking to journalists, who have descended on the steps of the hospital, and to medical historian Dr Geoffrey Rivett about why so many generations of royals have been treated there.
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