@misc{9513,
  author = {R. Charlton and J. Snowball and K. Bloomfield and C. de Vries},
  title = {Colorectal cancer incidence on the General Practice Research Database},
  year = {2012},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {21},
  number = {7},
  pages = {775-783},
  issn = {1053-8569},
  doi = {10.1002/pds.3236},
}