Black Sabbath's Tony Iommi has joined staff at a Birmingham hospital to help launch a fundraising drive for its cancer centre. The musician, who was diagnosed with lymphoma at Heartlands Hospital, wants to give back to the staff by raffling one of his guitars, as part of a £150,000 appeal to refurbish the cancer treatment centre. He said the guitar, a mahogany Gibson SG, was one he'd had for a while and used at home. "We're putting it up to raise some money for the stuff they need here - I hope