Ehab K Emam, Amany El-Wakkad, Mamdouh A. Mohamed and Howaida El-Gebally
Journal of Medical Sciences 7 ( 7 ): 1135 - 1142 , 2007
Hamed El-Khayat, Amany El-Wakkad, Ehab Khairy Emam and Saadia Ibrahim
Pakistan Journal of Biological Sciences 9 ( 15 ): 2847 - 2851 , 2006