- Correspondence to: Dr R Muga Hospital Universitari Germans Trias i Pujol, Servicio de Medicina Interna, 4a planta, Hospital Universitari Germans Trias i Pujol, Ctra. canyet s/n, 08916 Badalona, Spain;
- Accepted July 30, 2003
- First published March 16, 2004.
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