1. Internal Medicine Department; Miguel Servet University Hospital; Zaragoza Spain
2. Internal Medicine Department; Carlos III Hospital; Madrid Spain
3. Internal Medicine Department; University Hospital of Santiago de Compostela; Santiago de Compostela Spain
4. Internal Medicine Department; Bellvitge University Hospital, L'Hospitalet de Llobregat; Barcelona Spain
5. Internal Medicine Department; Vega Baja Hospital; Orihuela Spain
6. Internal Medicine Department; University Hospital of La Princesa; Madrid Spain
7. Internal Medicine Department; Cinic University Hospital; Barcelona Spain
8. Internal Medicine Department; Calahorra Foundation Hospital; Calahorra Spain
9. Internal Medicine Department; Ribera University Hospital; Alzira Spain