@misc{indiciae76c9ac252709, title = {On testing hypotheses concerning standardized mortality ratios.}, author = {L L Kupper and D G Kleinbaum}, year = {1971}, doi = {10.1016/0040-5809(71)90021-9}, url = {https://pubmed.ncbi.nlm.nih.gov/5162690/}, note = {Source identifier: 5162690} }