- Dr J Bargon, Pulmonary Medicine, Department of Internal Medicine II, Frankfurt University Hospital, Theodor-Stern-Kai 7, 60590 Frankfurt/Main, Germany
- Received July 29, 1999
- Revision requested October 4, 1999
- Revised September 20, 2000
- Accepted September 29, 2000
- First published January 1, 2001.
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