1. Department of Internal Medicine, Hospital Infanta Cristina, Madrid
2. Department of Internal Medicine, Hospital de Sant Jaume, Olot, Girona
3. Department of Internal Medicine, Hospital Valle de los Pedroches, Pozoblanco, Córdoba
4. Department of Internal Medicine, Centro Médico y Rehabilitación, Castelldefels
5. Department of Internal Medicine, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona