Raja`a Y.A, Noman T.A., Al Warafi A.K., Al Mashraki N.A. and Al Yosofi A.M.
Eastern Mediterranean Health Journal 7 ( 3 ): 568 - 570 , 2001
Al Thobhani A.K., Raja`a Y.A., Noman T.A. and Al Romaimah M.A.
Eastern Mediterranean Health Journal 12 ( 5 ): 599 - 604 , 2006