[1] Univ Ioannina, Dept Internal Med, Ioannina, Greece
[2] Hippokrateion Hosp, Cardiol Clin, Athens, Greece
[3] Natl & Kapodistrian Univ Athens, Gen Childrens Hosp pan & Aglaia Kyriakou, Dept Pediat, Pediat Clin B, Athens, Greece
[4] Natl & Kapodistrian Univ Athens, Attikon Univ Gen Hosp, Dept Cardiol, Athens, Greece
[5] Metropolitan Hosp, La Apheresis Unit, Cardiometab Ctr, Lipid Clin, Athens, Greece
[6] Aristotle Univ Thessaloniki, Propedeut Dept Internal Med 1, Thessaloniki, Greece
[7] Univ Gen Hosp Heraklion, Cardiol Clin, Iraklion, Greece
[8] 424 Gen Mil Training Hosp, Dept Internal Med, Thessaloniki, Greece
[9] Aristotle Univ Thessaloniki, Papageorgiou Gen Hosp Thessaloniki, Dept Internal Med, Thessaloniki, Greece
[10] Aristotle Univ Thessaloniki, Hippokration Gen Hosp, Dept Internal Med, Thessaloniki, Greece
[11] Police Med Ctr, Dept Endocrinol, Thessaloniki, Greece
[12] Natl & Kapodistrian Univ Athens, Propaedeut Internal Med Dept 2, Athens, Greece
[13] Natl & Kapodistrian Univ Athens, Diabet Res Unit, Athens, Greece
[14] Tzaneio Gen Hosp, Cardiol Clin, Piraeus, Greece
[15] Natl & Kapodistrian Univ Athens, Dept Pediat, Athens, Greece
[16] Natl & Kapodistrian Univ Athens, Laiko Hosp, Propedeut Dept Med 1, Athens, Greece