Kheir M.M., Ahmed A.M. and Elsarrag A.A.
Eastern Mediterranean Health Journal 7 ( 1 ): 79 - 83 , 2001
Ahmed A,M., Kheir M.M., Abdel Rahman A., Ahmed N.H. and Abdalla M.E.
Eastern Mediterranean Health Journal 7 ( 3 ): 551 - 555 , 2001
Eastern Mediterranean Health Journal 6 ( 5 ): 926 - 931 , 2000
Ahmed A.M. and Kheir M.M.
Eastern Mediterranean Health Journal 12 ( 3 ): 391 - 397 , 2006