PT - JOURNAL ARTICLE AU - Silcocks, P B S TI - Improving estimation of the variance of expectation of life for small populations AID - 10.1136/jech.2003.011338 DP - 2004 Jul 01 TA - Journal of Epidemiology and Community Health PG - 611--612 VI - 58 IP - 7 4099 - http://jech.bmj.com/content/58/7/611.short 4100 - http://jech.bmj.com/content/58/7/611.full SO - J Epidemiol Community Health2004 Jul 01; 58