[1] Univ London St Georges Hosp, Div Cardiac & Vasc Sci, Cardiovasc Biol Res Program, London SW17 0RE, England
[2] Hosp Univ Cent Asturias, Area Corazon, Oviedo, Spain
[3] Hosp Univ Canarias, Serv Cardiol, Tenerife, Spain
[4] Hosp Gen Univ, Serv Cardiol, Guadalajara, Spain