[1] Fresenius Med Care Dialysis Serv, Nephrol & Dialysis Ctr, Kosice, Slovakia
[2] Safarik Univ, Fac Med, Grad Sch, Kosice Inst Soc & Hlth, Kosice, Slovakia
[3] Safarik Univ, Fac Med, Dept Social Med, Inst Publ Hlth, Kosice, Slovakia
[4] Safarik Univ, Univ Hosp, Fac Med, Transplantat Dept,Surg Clin 1, Kosice, Slovakia
[5] St Lukas Geriatr Ctr, Dept Geriatr, Kosice, Slovakia
[6] Univ Groningen, Univ Med Ctr, Dept Community & Occupat Hlth, Groningen, Netherlands