Mahfouz A.A., Abdel Moneim I., Khan M.Y., Daffalla A.A., Diab M.M., El Gamal M.N. and Al Sharif A.I.
Eastern Mediterranean Health Journal 13 ( 1 ): 103 - 112 , 2007
Mahfouz A.A., Al Sharif A.I., El Gamal M.N. and Kisha A.H.
Eastern Mediterranean Health Journal 10 ( 3 ): 365 - 371 , 2004