@misc{indiciaed982953411aa,
  title = {[Methodologic references for work in maternal guidance].},
  author = {R Kellner and C Grosch and K Jährig and B Schneeweiss},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2724780/},
  note = {Source identifier: 2724780}
}