Ozzy Osbourne's death certificate shows he died of a heart attack

Azie Osborne died of a heart attack. This according to the death certificate which was obtained by the New York Times. The document filed at a London registry also says the Black Sabbath frontman suffered from coronary artery disease and Parkinson's.Osborne died on July 22nd at the age of 76. He was laid to rest last week in his hometown of Birmingham, England. ...