Saud A. Alarifi, M. Mubarak and Majed S. Alokail
Journal of Biological Sciences 4 ( 6 ): 694 - 699 , 2004
Fahad Al-Majhdi, Saud A. Alarifi and Mohammed Mubarak
Journal of Medical Sciences 7 ( 1 ): 42 - 50 , 2007