[1] Univ Liverpool, Sch Med, Liverpool, Merseyside, England
[2] Liverpool Heart & Chest Hosp, Liverpool, Merseyside, England
[3] Univ Liverpool, Liverpool Ctr Cardiovasc Sci, Liverpool, Merseyside, England
[4] Med Univ Lodz, Dept Hypertens, Chair Nephrol & Hypertens, Lodz, Poland
[5] Univ Opole, Dept Family Med & Publ Hlth, Fac Med, Opole, Poland