@misc{indiciaebb655acacf8a,
  title = {Postural tachycardia syndrome: time frequency mapping},
  author = {Novak, V. and Novak, P. and Opfer-Gehrking, T. L. and Low, P. A.},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/20040173081},
  note = {Source identifier: 20040173081}
}