@misc{indiciaeea131ea0aefa,
  title = {Ectopic bone formation associated with recombinant human bone morphogenetic proteins-2 using absorbable collagen sponge and beta tricalcium phosphate as carriers.},
  author = {Chang-Sung Kim and Joon-Il Kim and Jin Kim and Seong-Ho Choi and Jung-Kiu Chai and Chong-Kwan Kim and Kyoo-Sung Cho},
  year = {2005},
  doi = {10.1016/j.biomaterials.2004.07.015},
  url = {https://pubmed.ncbi.nlm.nih.gov/15585252/},
  note = {Source identifier: 15585252}
}