@article{BergerRustemeierGoebeletal.2021,
  author    = {Alexandra Berger and Anne-Kathrin Rustemeier and Jens G{\"o}bel and Dennis Kadioglu and Vanessa Britz and Katharina Schubert and Klaus Mohnike and Holger Storf and Thomas O. F. Wagner},
  title     = {How to design a registry for undiagnosed patients in the framework of rare disease diagnosis: suggestions on software, data set and coding system},
  journal   = {Orphanet journal of rare diseases},
  volume    = {16},
  number    = {art. 198},
  pages     = {1 -- 14},
  doi       = {10.1186/s13023-021-01831-3},
  year      = {2021},
}