@misc{indiciae83979b4452bd,
  title = {Meta-analysis: principles and procedures.},
  author = {M Egger and G D Smith and A N Phillips},
  year = {1997},
  doi = {10.1136/bmj.315.7121.1533},
  url = {https://pubmed.ncbi.nlm.nih.gov/9432252/},
  note = {Source identifier: 9432252}
}