“…It should be noted that improvements in treatment during the latter period led to increases in cure rates for this disease. As shown in Figure 4B.2, data from longrunning cancer registries in Connecticut ( (Heston et al, 1986;Connecticut Tumor Registry, 2001;Polednak, 2001Polednak, , 2003 and Saskatchewan, Canada (Wang and Haines, 1995), do not indicate the same type of decrease in leukaemia incidence rates in the 1970s as do the mortality data reported by Archer. However, the cancer registry data are sparser since they relate to smaller populations.…”