@misc{indiciae01ab08d8eb23,
  title = {[Middle course between group and individual preventive programs].},
  author = {N Krämer and K H Kunzelmann and R Hickel},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2269086/},
  note = {Source identifier: 2269086}
}