8Theodore R.Holford.Life tables with concomitant information[J].Biometrics,1976,32:587-597.
9J-M Romeder.Potential years of life lost between ages 1 and 70:An Indicator of premature mortality for health planning,International Journal of Epidemiologyp[J].1977,3(2):143.
10Demsey M.Decline in ruberculosis;the death rate fails to tell the entire story[J].American Review of Tuberculosis,1947,86:157.
