[1] Fdn Policlin Univ A Gemelli IRCCS, Dept Cardiovasc Sci, Rome, Italy
[2] Catholic Univ Med Sch, Rome, Italy
[3] Sorbonne Univ, Hop Pitie Salpetriere AP HP, Inst Cardiol, ACT Study Grp,INSERM UMRS 116, Paris, France
[4] Fdn Policlin Univ A Gemelli IRCCS, Dept Cardiovasc Sci, Largo Gemelli 8, I-00168 Rome, Italy