@article{KugGreSch20, title = {Simpson's paradox in Covid-19 case fatality rates: a mediation analysis of age-related causal effects}, author = {von K{\"u}gelgen*, J. and Gresele*, L. and Sch{\"o}lkopf, B.}, journal = {IEEE Transactions on Artificial Intelligence}, volume = {2}, number = {1}, pages = {18--27}, publisher = {IEEE Computer Society}, year = {2021}, note = {*equal contribution}, doi = {10.1109/TAI.2021.3073088}, url = {https://www.computer.org/csdl/journal/ai/5555/01/09404149/1sNm718j25W} }