- Dr Barry J Snow, Department of Neurology, Auckland Hospital, Private Bag 92024, Auckland, New Zealand. Telephone 0064 25 314439; fax 0064 9 307 4924; email:
- Received 28 July 1998
- Revised 8 June 1999
- Accepted 16 August 1999
- Published online 1 March 2000.
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