@misc{indiciae1881ab6297d9,
  title = {Systematic reviews: when is an update an update?},
  author = {J A Muir Gray and Nicola Pearce-Smith},
  year = {2006},
  doi = {10.1016/s0140-6736(06)68920-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/16798384/},
  note = {Source identifier: 16798384}
}