@article{Bengtsson2010, author = {Bengtsson, T. and Dribe, M.}, title= {Quantifying the family frailty effect in infant and child mortality by using Median Hazard Ratio (MHR)}, year = {2010}, journal = {Historical Methods: A Journal of Quantitative and Interdisciplinary History}, volume = {43}, number = {1}, pages = {15‒27}, }