[1] Univ Macedonia, Thessaloniki, Greece
[2] Attikon Univ Hosp, Athens, Greece
[3] Univ Gen Hosp Larissa, Larisa, Greece
[4] Novartis Hellas SACI, Athens, Greece
[5] Collaborat Ctr Clin Epidemiol & Outcomes Res, Athens, Greece
[6] Med Res & Innovat LP, Thessaloniki, Greece
[7] Natl Sch Publ Hlth, Athens, Greece