Police officers stand on duty outside the King Edward VII hospital in London
Police officers stand on duty outside the King Edward VII hospital in London June 4, 2012. Britain's Prince Philip, Queen Elizabeth's 90-year-old husband, was taken to the hospital with a bladder infection on Monday, Buckingham Palace said in a statement. The palace said he had been taken to hospital as "a precautionary measure" and would remain under observation for a few days, meaning that he will miss the latter part of the queen's Diamond Jubilee celebrations. REUTERS/Toby Melville (BRITAIN - Tags: SOCIETY ROYALS ENTERTAINMENT HEALTH)