[1] Evangelismos Gen Hosp Athens, Dept Cardiol 2, Athens, Greece
[2] Chinese Univ Hong Kong, Dept Med & Therapeut, Fac Med, Hong Kong, Peoples R China
[3] Chinese Univ Hong Kong, Li Ka Shing Inst Hlth Sci, Fac Med, Hong Kong, Peoples R China
[4] Univ Ioannina, Sch Med, Dept Cardiol 2, Ioannina, Greece
[5] Univ Ioannina, Sch Hlth Sci, Physiol Lab, Fac Med, Ioannina, Greece
[6] Univ Ioannina, Sch Med, Dept Cardiol 1, Ioannina, Greece
[7] Helena Venizelou Hosp, Dept Cardiol, Athens, Greece
[8] Mil Hosp, NIMITS, Athens, Greece
[9] G Hatzikosta Gen Hosp, Dept Cardiol, Ioannina, Greece
[10] Univ Santiago de Compostela, Univ Clin Hosp Santiago, Dept Cardiol, Santiago De Compostela, Spain
[11] Inst Hlth Res Santiago IDIS, Santiago, Spain
[12] Tianjin Med Univ, Hosp 2, Tianjin Inst Cardiol, Dept Cardiol, Tianjin, Peoples R China
[13] Queens Univ, Kingston Gen Hosp, Div Cardiol Electrophysiol & Pacing, Kingston, ON, Canada
[14] Iwate Med Univ, Dept Internal Med, Morioka, Iwate 0208505, Japan
[15] Univ Athens, Hippokrat Hosp, Cardiol Clin 1, 114 Vas Sofias Ave, Athens 11527, Greece
[16] Univ Oklahoma, Hlth Sci Ctr, Oklahoma City, OK USA