- Dr K Tsukamoto, Division of Pulmonary Medicine, Fujieda Municipal General Hospital, 4-1-11 Surugadai, Fujieda, Shizuoka, 426-8677, Japan
- Received October 21, 1999
- Revision requested January 31, 2000
- Revised July 25, 2000
- Accepted July 25, 2000
- First published November 1, 2000.
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