@misc{indiciaeaa10a7dfc526, title = {Systematic epidemiologic theory: conceptual foundations and axiomatic elements.}, author = {G M Lower}, year = {1983}, doi = {10.1016/0306-9877(83)90063-4}, url = {https://pubmed.ncbi.nlm.nih.gov/6888306/}, note = {Source identifier: 6888306} }