To cite package ‘omophub’ in publications use:

  Chen A (2026). _omophub: R Client for the 'OMOPHub' Medical
  Vocabulary API_. R package version 1.8.1,
  <https://github.com/omophub/omophub-r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {omophub: R Client for the 'OMOPHub' Medical Vocabulary API},
    author = {Alex Chen},
    year = {2026},
    note = {R package version 1.8.1},
    url = {https://github.com/omophub/omophub-r},
  }