[1] Menoufia Univ, Dept Cardiol, Fac Med, Menoufia, Egypt
[2] Natl Heart Inst, Giza, Egypt
[3] Zagazig Univ, Dept Cardiol, Fac Med, Zagazig, Egypt
[4] Cairo Univ, Dept Cardiol, Fac Med, Cairo, Egypt
[5] October Univ, Dept Cardiol, Cairo, Egypt
[6] Mansoura Univ, Dept Cardiol, Fac Med, Mansoura, Egypt
[7] Port Foad Ctr, Cardiol Unit, Port Foad, Egypt
[8] Univ Alexandria, Dept Cardiol, Fac Med, Alexandria, Egypt
[9] Cairo Univ, Crit Care Dept, Fac Med, Cairo, Egypt
[10] Banha Univ, Dept Cardiol, Fac Med, Banha, Egypt
[11] Bany Swef Univ, Dept Cardiol, Fac Med, Cairo, Egypt
[12] Ain Shams Univ, Dept Cardiol, Fac Med, Cairo, Egypt
[13] Assiut Univ, Dept Cardiol, Fac Med, Assiut, Egypt
[14] Maady Mil Hosp, Cardiol Unit, Cairo, Egypt
[15] Tanta Univ, Dept Cardiol, Fac Med, Tanta, Egypt
[16] Univ Alexandria, Dept Physiol, Fac Med, Alexandria, Egypt