@misc{indiciae19f1894cb1e1,
  title = {Osteoinductive bone graft substitutes for spinal fusion: a basic science summary.},
  author = {S C Ludwig and S D Boden},
  year = {1999},
  doi = {10.1016/s0030-5898(05)70116-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/10471768/},
  note = {Source identifier: 10471768}
}