1. SCOWEN, E. F., and HADFIELD, G. (1955), Cancer, 8, No. 5, Sept., Oct.
2. HADFIELD, G. (1957), Lancet, May 25, o058-Io6I.
3. BULBROOK, R. D., GREENWOOD, F. C., HADFIELD, G. J., and SCOWEN, E. F. (1958), Brit. med. J., i, 7.
4. YOUNG, STRETTON, BULBROOK, R. D., and GREEN-WOOD, F. C. (1957), Lancet, ? 350.
5. R. D., GREENWOOD, SCOWEN, E. F. (1958), BFr.it.C.m,edH. AJ.D,FiIi,EIL2.D, 8.