- Dr Hiroshi Nakane, Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, Maidashi 3–1–1, Fukuoka 812, Japan. Telephone 0081 92 642 5271; fax 0081 92 632 2551.
- Received September 10, 1997
- Revised January 5, 1998
- Accepted January 14, 1998
- First published September 1, 1998.
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