LONDON (AP) -- Queen Elizabeth II's husband has returned to official duties following a heart procedure that saw him spend Christmas in hospital.
Prince Philip was admitted to hospital with chest pains just before the holidays and underwent a successful coronary stent procedure.
The 90-year-old was soon back on his feet, however, pictured walking to join the rest of the royal family in attending their traditional New Year's Day church service.
Philip attended a fundraising dinner at Cambridge University Tuesday to support its Scott Polar Research Institute -- his first official engagement since the heart scare.
The prince, wearing a dark suit, joined other guests including Prince Albert of Monaco at the event supporting polar exploration.
(Copyright 2012 by The Associated Press. All Rights Reserved.)
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