Abstract
References
1.
Haddow
A
(1965 ) Brit. med. Bull . 21 , 133
2.
von Kleist
S
Burtin
P
(1966 ) C. R. Acad. Sci., Par is
263 , 1543
3.
Tee
D E H
Wang
M
Watkins
J
(1964 ) Nature, Lond . 204 , 897
4.
Tee
D E H
Wang
M
Watkins
J
(1965 ) Europ. J. Cancer
1 , 315