@article{Cardoso2004,
author = {Cardoso, M.R.A. and Cousens, S.N. and Siqueira, L.F.G. and Alves, F.M. and D’Angelo, L.A.V.},
title= {Crowding: Risk factor or protective factor for lower respiratory disease in young children},
year = {2004},
doi = {10.1186/1471-2458-4-19},
journal = {BMC Public Health},
volume = {2004},
number = {4},
pages = {19},
}