- Dr Masato Matsuura, Department of Neuropsychiatry, Nihon University School of Medicine, 30–1 Ohyaguchi-kamimachi, Itabashi-ku, Tokyo, Japan. Telephone 0081 3 3972 8111; fax 0081 3 3974 2920; email
- Received May 6, 1998
- Revised January 29, 1999
- Accepted February 10, 1999
- First published August 1, 1999.
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