Abstract
References
1.
Frier
B M
Steel
J M
Matthews
J M
Duncan
L J P
(1980 ) Lancet
i , 1232 –1234
2.
Mehl
J
(1983 ) In: Encyclopaedia of Occupational Health and Safety . 3rd edn. Ed.
Parmeggiani
L
. International Labour Office , Geneva ; p 618
3.
Steel
J M
Duncan
L J P
(1983 ) Travel and Traffic Medicine International
1 , 101 –104