- Correspondence to:
Dr A Torres, Unitat de Vigilància Intensiva Respiratoria (UVIR), Servei de Pneumologia, Institut Clínic de Pneumologia I Cirurgia Toràcica, Hospital Clínic I Provincial, Villarroel 170, 08036 Barcelona, Spain;
- Accepted August 16, 2001
- Revised July 20, 2001
- First published January 1, 2002.
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