@article{Zimmer2003,
author = {Zimmer, Z. and House, J.S.},
title= {Education, income, and functional limitation transitions among American adults: contrasting onset and progression},
year = {2003},
doi = {10.1093/ije/dyg254},
URL = {http://ije.oxfordjournals.org/cgi/content/abstract/32/6/1089 },
journal = {International journal of epidemiology},
volume = {32},
number = {6},
pages = {1089--1097},
}