@inbook{Aaby1992,
author = {Aaby, P.},
title= {Overcrowding and intensive exposure: Major determinants of variations in measles mortality in Africa},
year = {1992},
editor = {Van de Walle, E.},
editor = {Pison, G.},
editor = {Sala-Diakanda, M.},
booktitle = {Mortality and society in sub-Saharan Africa},
address = {Oxford},
publisher = {Clarendon Press},
pages = {319--348},
}