@misc{indiciae3c7334f844c3,
  title = {Manage productivity with HPPD.},
  author = {Beverley Klinkhammer and Kay Brown},
  year = {2003},
  doi = {10.1097/00006247-200301000-00017},
  url = {https://pubmed.ncbi.nlm.nih.gov/12544584/},
  note = {Source identifier: 12544584}
}