A leading Australian surgeon testified on Wednesday in a case related to the death of a patient operated by Indian-American Dr Jayant Patel, labelled by media as 'Dr Death', on the eighth day of his manslaughter trial. Colorectal surgeon Dr Brian Collopy testified via video-link from Melbourne before the Brisbane Supreme Court in relation to Patel's 75-year-old patient Mervyn John Morris, according to media reports.