@misc{indiciae1c241aa8ea84,
  title = {Combined pregnancies.},
  author = {P D Ross and R E Gunther},
  year = {1970},
  doi = {10.1016/s0002-9378(15)30380-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5458582/},
  note = {Source identifier: 5458582}
}