- Dr Joseph Jankovic, Department of Neurology, Director of Parkinson’s Disease Center, and Movement Disorders Clinic, Baylor College of Medicine, 6550 Fannin St No 1801, Houston, Texas 77030, USA. Telephone 001 713 798 5998; fax 001 713 798 6808.
- Received August 27, 1998
- Revised November 16, 1998
- Accepted November 26, 1998
- First published May 1, 1999.
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