- Dr A Ochiai, Pathology Division, National Cancer Center Research Institute East, 6-5-1, Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
- Received May 15, 2000
- Revision requested September 8, 2000
- Revised November 24, 2000
- Accepted December 19, 2000
- First published April 1, 2001.
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