Shawky R.M., Abdel Aleem K., Rifaat M.M. and Moustafa A.
Eastern Mediterranean Health Journal 7 ( 1 ): 229 - 237 , 2001
Shawky R.M., El Aleem K.A., Rifaat M.M., El Naggar R.L. and Marzouk G.M.
Eastern Mediterranean Health Journal 8 ( 1 ): 49 - 54 , 2002