Ben: I have two journal articles that I will bring with me when we meet re the PD Awareness Day Conf. later today. The first is: Differential Diagnosis of Parkinson's Disease and the Parkinsonism Plus Syndromes, Mark Stacy, MD, and Joseph Jankovic, MD in Neurologic Clinics, Volume 10, Number 2, May 1992, pp. 341-359. I don't know if authors still honor reprint requests, but folks can try: Joseph Jankovic, MD Department of Neurology Baylor College of Medicine 6550 Fannin, 1801 Smith Tower Houston, TX 77054 or call nearest medical school library and ask them to send a copy (there will be a small fee for copying, postage, etc. The other is: Severity and specificity of cognitive impairment in Alzheimer's, Huntington's, and Parkinson's diseases and progresive supranuclear palsy. Bernard Pillon, PhD; Bruno Dubois, MD; Alain Ploska; and Yves Agid, MD, PhD. Neurology 1991;41-634-643. See you later. Janice ***** Janice Clements 649 Everest Rd. Milton, VT 05468 (802) 893-1263