@misc{9989,
  author = {T. Card and M. Solaymani-Dodaran and R. Hubbard and R. Logan and J. West},
  title = {Is an internal comparison better than using national data when estimating mortality in longitudinal studies?},
  year = {2006},
  journal = {J Epidemiol Community Health},
  volume = {60},
  number = {9},
  pages = {819-21},
  issn = {0143-005X (Print) 0143-005x},
  doi = {10.1136/jech.2005.041202},
}