@article{Olshansky1986,
author = {Olshansky, S. Jay and Ault, A. Brian},
title= {The Fourth Stage of the Epidemiologic Transition: The Age of Delayed Degenerative Diseases},
year = {1986},
doi = {10.2307/3350025},
journal = {Milbank Quarterly},
volume = {64},
number = {3},
pages = {355--391},
}