Effect of Exercise Protocol on Patients undergoing Heart Valve Surgery -Reported Outcomes Measures مؤلف البحث Manal Sayed Atya 1 , Olfat Farouk Thabet 2 , Hussein El Khayat 3 , Maha Nafady Abd Elhafez 4 مؤلف البحث Manal Sayed Atya sayed