. (1998). . (e1420). Reports, 6(6), e1420
. "" .e1420 , Reports, 6, 6, 1998, e1420.
. (1998). '', Reports, 6(6), e1420.
, "," Reports, 6 6 (1998): e1420,
. . Reports. 1998;6(6):e1420 (In Persian).