@article{GuldenBlasiniNassirianetal.2021,
  author    = {Christian Gulden and Romina Blasini and Azadeh Nassirian and Alexandra Stein and Fatma Bet{\"u}l Altun and Melanie Kirchner and Hans-Ulrich Prokosch and Martin Boeker},
  title     = {Prototypical clinical trial registry based on fast healthcare interoperability resources (FHIR): design and implementation study},
  journal   = {JMIR medical informatics},
  volume    = {9},
  number    = {1, art. e20470},
  pages     = {1 -- 13},
  doi       = {10.2196/20470},
  year      = {2021},
}