@article{Fortin2012,
author = {Fortin, M. and Stewart, M. and Poitras, M.E. and Almirall, J. and Maddocks, H.},
title= {A systematic review of prevalence studies on multimorbidity: Toward a more uniform methodology},
year = {2012},
doi = {10.1370/afm.1337},
volume = {10},
number = {2},
pages = {142--151},
}