. (2000). . (e1680). Reports, 8(8), e1680
. "" .e1680 , Reports, 8, 8, 2000, e1680.
. (2000). '', Reports, 8(8), e1680.
, "," Reports, 8 8 (2000): e1680,
. . Reports. 2000;8(8):e1680 (In Persian).