1. Cardiology Service, Hospital Universitario La Princesa, 28006 Madrid, Spain
2. Cardiology Service, Hospital Arnau de Vilanova, 46015 Valencia, Spain
3. Hematology Service, Hospital Universitario Morales Meseguer, 30008 Murcia, Spain
4. Cardiology Service, Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
5. Medical Affairs Department, Boehringer Ingelheim España, Sant Cugat del Vallés, 08173 Barcelona, Spain
6. Hematology Service, Hospital Clínico Lozano Blesa, 50009 Zaragoza, Spain