@article{Brønnum-Hansen2021,
author = {Brønnum-Hansen, H. and Östergren, O. and Tarkiainen, L. and Hermansen, Å and Martikainen, P. and Wel, K.A. and Lundberg, O.},
title= {Changes in life expectancy and lifespan variability by income quartiles in four Nordic countries: A study based on nationwide register data},
year = {2021},
doi = {10.1136/bmjopen-2020-048192},
volume = {11},
number = {6},
pages = {e048192},
}