[1] Gen Hosp Chios, Dialysis Unit, Dept Nephrol, Chios 82100, Greece
[2] Gen Hosp Chios, Dept Internal Med, Chios 82100, Greece
[3] NIMTS Hosp, Dept Nucl Med, Athens, Greece
[4] Gen Hosp Chios, Dept Cardiol, Chios 82100, Greece
[5] Gen Hosp Chios, Dept Chem, Chios 82100, Greece
[6] Laikon Gen Hosp, Dept Nephrol, Athens, Greece