@misc{indiciae45fb188508c1,
  title = {[Sentinel practice data quality. Denominator concepts, spatial and temporal frequency patterns. Special issue following the "1st Sentinel-Workshop Hannover" on 29 April 1992].},
  year = {1993},
  url = {https://pubmed.ncbi.nlm.nih.gov/8467120/},
  note = {Source identifier: 8467120}
}