@misc{indiciaed8199cf81327,
  title = {[Freiburg instrument set (2)].},
  author = {J C Türp and M Kern and M B Hürzeler and C Bertalanffy and J R Strub},
  year = {1991},
  url = {https://pubmed.ncbi.nlm.nih.gov/1668021/},
  note = {Source identifier: 1668021}
}