To cite package ‘CodelistGenerator’ in publications use:

  Burn E, Chen X, Mercade-Besora N (2024). _CodelistGenerator: Identify
  Relevant Clinical Codes and Evaluate Their Use_. R package version
  3.2.1, <https://CRAN.R-project.org/package=CodelistGenerator>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CodelistGenerator: Identify Relevant Clinical Codes and Evaluate Their Use},
    author = {Edward Burn and Xihang Chen and Nuria Mercade-Besora},
    year = {2024},
    note = {R package version 3.2.1},
    url = {https://CRAN.R-project.org/package=CodelistGenerator},
  }