Nagwa Abd EL-Ghaffar and Nehal Hamdy EL-Said
Journal of Medical Sciences 6 ( 4 ): 626 - 630 , 2006
Heba Sayed Assal, Hanaa M. Emam and Nagwa Abd EL-Ghaffar
Journal of Medical Sciences 6 ( 3 ): 314 - 320 , 2006