1. Department of Cardiology; Research Center La Fe Hospital; José María Haro, 59, puerta 59, 46022 Valencia Spain
2. Department of Cardiology; Dr. Peset Hospital; Valencia Spain
3. Department of Cardiology; San Juan Hospital; Alicante Spain
4. Department of Cardiology; Elche Hospital; Spain
5. Department of Cardiology; General Hospital; Valencia Spain
6. Department of Cardiology; La Fe Hospital; Valencia Spain
7. Department of Cardiology; General Hospital; Alicante Spain