@misc{indiciae12eae5d42e77,
  title = {Solar activity.},
  author = {B Busby},
  year = {2000},
  doi = {10.1097/00004032-200011000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/11045521/},
  note = {Source identifier: 11045521}
}