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Eastern Mediterranean Health Journal 7 ( 4 ): 679 - 688 , 2001
Abdel Ghaffar Y.T., Amin E., Abdel Rasheed M. and Fouad H.H.
Eastern Mediterranean Health Journal 9 ( 1 ): 61 - 69 , 2003
Abdel Aziz M.T., Abdel Ghaffar Y., Fouad H.H., Abdel Aziz D.M. and El Magd A.A.
Eastern Mediterranean Health Journal 7 ( 4 ): 779 - 786 , 2001