Doctors give evidence against Finks bikie Troy Mercanti THE assault trial of Finks bikie Troy Mercanti has begun hearing medical evidence. Mercanti, 45, is facing five charges, including grievous bodily harm and assault against Tammy Kingdon, his partner of 15 years and the mother of his two sons. He has pleaded not guilty to all charges. Doctors began giving evidence this morning after four and a half days of Ms Kingdon giving evidence via video link to the District Court jury. During the cross examination, Ms Kingdon and Mercanti's counsel Colin Lovitt QC's constantly interrupted each other. At times he yelled at Ms Kingdon and at others she broke down into tears and called Mr Lovitt a "liar." During the prosecution's re-examination today, Ms Kingdon re-affirmed that police did not source her medical records to make a statement against Mercanti. Earlier in the trial, Mr Levitt put it to Ms Kingdon that police had scoured her medical records to link times that she went to hospital and the times that Mercanti was not in prison to support accusations of domestic violence. The first doctor to take the stand this afternoon was a plastic surgeon who repaired Ms Kingdon's eye socket in Royal Perth Hospital after it was fractured in Bunbury in 1997.