behnam shakerian department of cardiothoracic surgery, shariati general hospital, tehran university of medical sciences, tehran, ir iran mohammad hossein mandegar department of cardiothoracic surgery, shariati general hospital, tehran university of medical sciences, tehran, ir iran bahieh moradi department of echocardiography, day general hospital, tehran, ir iran; department of echocardiography, day general hospital, p. o. box: 1434873111, tehran, ir iran. tel: +98-2184942875, fax: +98-2166005214 farideh roshanali department of echocardiography, day general hospital, tehran, ir iran

Bode Falase Michael Sanusi Adetinuwe Majekodunmi Barakat Animasahun Ifeoluwa Ajose Ariyo Idowu Adewale Oke