ERRATA AND CLARIFICATIONS 2G..:The third sentence under EXPOSURE GROUPS shouid begin “In December 1984,...." PG. i:The first sentence of the legend or Fig.: should read "Percent survivors of che different exposure groups since 1954." PG. 10: In Table 2 the fourth idencification PG. il: In Fig. number should read "2197". 3 the mame SIFO can be consicerec the equivalenc of Ailingnae, for Sifo Island is part of the Ailingnae aroil. S004 O95