- Correspondence to:
Dr M Ichinose, Division of Respiratory and Infectious Diseases, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan;
- Accepted December 11, 2002
- Revised December 7, 2002
- First published April 1, 2003.
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