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- Published online June 9, 2011.
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- *Dept of Internal Medicine, Hospital Infanta Cristina Parla, Madrid Spain
- #Dept of Internal Medicine, Hospital Universitario de Fuenlabrada Fuenlabrada, Madrid Spain
- ¶Dept of Internal Medicine, Hospital Universitario Fundación Alcorcón Alcorcón, Madrid Spain
- +Dept of Internal Medicine, Hospital Clínico de San Carlos Madrid Spain
- §Dept of Internal Medicine, Hospital Severo Ochoa Leganés, Madrid Spain
- fDepartament of Admission. Hospital Infanta Cristina Parla, Madrid Spain
- R. Barba, Hospital Infanta Cristina, Parla, Madrid, Avda 9 Junio n° 2, 28981, Parla, E-mail: raquel.barba{at}salud.madrid.org