@misc{indiciae05d7acad846c,
  title = {[Case limitations as an essential problem in morbidity studies].},
  author = {W Schaarschmidt and N Schulz},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5373005/},
  note = {Source identifier: 5373005}
}