1. Venous Thromboembolism Unit Internal Medicine Hospital General Universitario Gregorio Marañon Madrid Spain
2. Department of Medicine School of MedicineUniversidad Complutense de Madrid Madrid Spain
3. Instituto de Investigaciones Sanitarias Gregorio Marañon (IiSGM) Madrid Spain
4. Respiratory Department Hospital General Universitario Gregorio Marañon Madrid Spain
5. Respiratory Diseases CIBER (CIBERER) Madrid Spain
6. Internal Medicine Hospital General Universitario Gregorio Marañon Madrid Spain