Mark Pilla1,2, Roger W Byard3,4. 1. Discipline of Anatomy and Pathology, School of Medicine, The University of Adelaide, Frome Rd, Adelaide, SA, 5005, Australia. 2. Forensic Science SA, 21 Divett Place, Adelaide, SA, Australia. 3. Discipline of Anatomy and Pathology, School of Medicine, The University of Adelaide, Frome Rd, Adelaide, SA, 5005, Australia. roger.byard@sa.gov.au. 4. Forensic Science SA, 21 Divett Place, Adelaide, SA, Australia. roger.byard@sa.gov.au.