[1] Univ Milano Bicocca, Dept Clin Med & Prevent, Ist Auxol Italiano, Dept Cardiol, Milan, Italy
[2] Jichi Med Univ, Dept Cardiol, Shimotsuke, Tochigi, Japan
[3] Univ Barcelona, Hosp Mutua Terrassa, Dept Internal Med, Barcelona, Spain
[4] Autonomous Univ Madrid, Dept Epidemiol & Publ Hlth, E-28049 Madrid, Spain
[5] Hosp San Agustin, Dept Nephrol, Aviles, Spain
[6] Hosp 12 Octubre, Hypertens Unit, E-28041 Madrid, Spain
[7] Univ Milano Bicocca, Dept Clin Med & Prevent, Milan, Italy