Abstract

References
1.
Egan
R L
. (1969 ) Oncology , 23 , 99 –112 , 126 –148 .
2.
Ellis
R E
. (1972 ) British Journal of Radiology , 45 , 148 .
3.
Price
J L
Butler
P D
. (1970 ) British Journal of Radiology , 43 , 251 –255 .
4.
Price
J L
Butler
P D
. (1971 ) X-ray Bulletin , 19 , 3 .
5.
Samuel
E
. (1974 ) Proceedings of the Royal Society of Medicine , 67 , 287 .
6.
Strax
P
. (1973 ) American Journal of Roentgenology , 117 , 686 .
7.
Young
G B
. (1974 ) British Journal of Radiology , 47 , 811 .
