@misc{indiciae4038713dc373,
  title = {A germfree infant.},
  author = {S Alpert and J Gray and S Romney and S M Levenson},
  year = {1969},
  doi = {10.1016/s0140-6736(69)92103-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4180395/},
  note = {Source identifier: 4180395}
}