@misc{indiciae613396194073,
  title = {Tests for homogeneity of the risk difference when data are sparse.},
  author = {S R Lipsitz and K B Dear and N M Laird and G Molenberghs},
  year = {1998},
  url = {https://pubmed.ncbi.nlm.nih.gov/9544513/},
  note = {Source identifier: 9544513}
}