@misc{indiciae0222251b2d29,
  title = {Ante natal classes--how effective?},
  author = {H Johns and S Newman},
  year = {1988},
  doi = {10.1016/s1031-170x(88)80036-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/3214323/},
  note = {Source identifier: 3214323}
}