1 Department of Internal Medicine, Hospital General Universitario Santa Lucía, Universidad Católica de Murcia, Murcia, Spain.
2 Department of Geriatrics, Hospital Germans Trias i Pujol, Badalona, Barcelona, Universidad Autónoma de Barcelona, Spain.
3 Department of Emergency, Clermont-Ferrand University Hospital, Clermont-Ferrand, France.
4 Department of Internal Medicine, Complejo Hospitalario Universitario A Coruña, Spain.
5 Department of Internal Medicine, Hospital Virgen de la Victoria, Málaga, Spain.
6 Department of Pneumonology, Hospital Universitari i Politècnic La Fe, Valencia, Spain.
7 Department of Pneumonology, Hospital Universitario Virgen de las Nieves, Granada, Spain.
8 Department of Internal Medicine, Hospital Universitario Joan XXIII de Tarragona, Tarragona, Spain.
9 Hospital Universitario General de Cataluña, Department of Hematology, Barcelona, Spain.
10 Department of Internal Medicine, Hospital Germans Trias i Pujol, Badalona, Barcelona, Universidad Autónoma de Barcelona, Spain. Electronic address: [email protected].
11 Department of Internal Medicine, Hospital Germans Trias i Pujol, Badalona, Barcelona, Universidad Autónoma de Barcelona, Spain.