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Black Sabbath's estranged drummer Bill Ward is recovering from intestinal surgery. 

The British rocker reveals in a website post that he developed perforated diverticulitis, a condition in which pouches begin to grow on the intestine walls and rupture. 

Ward received treatment in California.  His doctors say the operation was a success, and that he'll make a full recovery. 

However, it means Ward has had to postpone a reception later is month at the Annapolis Collection Gallery in Maryland, which is currently displaying his artwork.  The event was scheduled for October 26th, and is expected to be rescheduled. 

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