TY - STAND AU - T. Card AU - M. Solaymani-Dodaran AU - R. Hubbard AU - R. Logan AU - J. West BT - J Epidemiol Community Health DO - 10.1136/jech.2005.041202 M1 - 9 PY - 2006 SP - 819 EP - 21 T2 - J Epidemiol Community Health TI - Is an internal comparison better than using national data when estimating mortality in longitudinal studies? VL - 60 SN - 0143-005X (Print) 0143-005x ER -