[1] Univ Barcelona, Hosp Mutua Terrassa, Dept Internal Med, Plaza Dr Robert 5, Terrassa 08221, Spain
[2] Univ Autonoma Madrid, Dept Prevent Med & Publ Hlth, Madrid, Spain
[3] IdiPAZ CIBERESP, Madrid, Spain
[4] CAP Casas Ibanez, Albacete, Spain
[5] Hosp Univ Cent Asturias, Dept Nephrol, Oviedo, Spain
[6] Univ Barcelona, CAP Mina, Barcelona, Spain
[7] Hosp 12 Octubre, Hypertens Unit, Dept Nephrol, Madrid, Spain