Abstract

References
1.
Atkins
H.
,
Hayward
J.L.
,
Klugman
D.J.
, &
Wayte
A.B.
(1972 ) British Medical Journal ii , 423 –429 .
2.Cancer Research Campaign (1976 ) British Medical Journal i , 1035 –1038 .
3.
Schottenfeld
D.
,
Nash
A.G.
,
Robbins
G.F.
, &
Beattie
E.J.
(1976 ) Cancer 38 , 1001 –1007 .
4.
van Dongen
J.A.
(1977 ) World Journal of Surgery 1 , 306 –308 .
