@misc{indiciae5ac3463c9cff,
  title = {[Study on manual toothbrushing and its evaluation. I].},
  author = {L Spengler and H J Spengler and L G Lidberg},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1060250/},
  note = {Source identifier: 1060250}
}