@misc{indiciaeffbe55fdb6d7,
  title = {Population differences affect nonstress test reactivity.},
  author = {L L Paine and D M Strobino and F R Witter and T R Johnson},
  year = {1991},
  url = {https://pubmed.ncbi.nlm.nih.gov/2037889/},
  note = {Source identifier: 2037889}
}