@misc{indiciae87205d38ee9a,
  title = {Endoscopically controlled sinus floor augmentation. A preliminary report.},
  author = {W Engelke and I Deckwer},
  year = {1997},
  doi = {10.1034/j.1600-0501.1997.080612.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/9555210/},
  note = {Source identifier: 9555210}
}