[1] TEI Lamia, Lamia, Greece
[2] Larissa Univ Hosp, Dept Cardiol, POB 1425, Larisa 41110, Greece
[3] Larissa Univ Hosp, Dept Neurol, Larisa 41110, Greece
[4] Larissa Univ Hosp, Dept Cardiovasc & Thorac Surg, Larisa 41110, Greece
[5] Larissa Univ Hosp, Dept Nucl Med, Larisa 41110, Greece
[6] Larissa Univ Hosp, Dept Psychiat, Larisa 41110, Greece
[7] Larissa Univ Hosp, Dept Vasc Surg, Larisa 41110, Greece
[8] TEI Athens, Nursing Dept B, Athens, Greece
[9] Emory Univ Hosp, Div Cardiol, Atlanta, GA 30322 USA