Function that organises US prostate data in apc.data.list
format.
The data set is taken from table 2 of Holford (1983), which contains age-specific counts of deaths
and midperiod population measured in 1000s,
during the period 1935-1969.
Reported in 5 year age groups and 5 year period groups.
The original source was
Cancer deaths: National Center for Health Statistics, 1937-1973
Population 1935-60: Grove and Hetzel, 1968
Population 1960-69: Bureau of the Census, 1974
The data set is in "AP"-format.