@misc{indiciae7bc51496c4fc,
  title = {Decrease in incidence of hepatitis A infections in Germany.},
  author = {G Frösner and H Willers and R Müller and D Schenzle and F Deinhardt and W Höpken},
  year = {1978},
  doi = {10.1007/bf01641983},
  url = {https://pubmed.ncbi.nlm.nih.gov/215557/},
  note = {Source identifier: 215557}
}