@misc{indiciae3b9e82adef6b,
  title = {Is it normal for multiples to be smaller than singletons?},
  author = {Isaac Blickstein},
  year = {2004},
  doi = {10.1016/j.bpobgyn.2004.04.008},
  url = {https://pubmed.ncbi.nlm.nih.gov/15279820/},
  note = {Source identifier: 15279820}
}