1. The Sydney multicentre study of Parkinson's disease: progression and mortality at 10 years. Issue 3 (1st September 1999) Authors: Hely, Mariese A; Morris, John G L; Traficante, Robert; Reid, Wayne G J; O'Sullivan, Dudley J; Williamson, Peter M Journal: Journal of neurology, neurosurgery and psychiatry Issue: Volume 67:Issue 3(1999) Page Start: 300 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗