@article{articlebc5bcdf8,
title   = {Air pollution cardiovascular effects:: the source of health data modulating effect estimates},
author = {Pereira, L. and Braga, A. and Cendon, S. and Romaldini, H. and Saldiva, Paulo Hilário Nascimento and Lopes, A.},
year = {2003},
journal   = {Epidemiology}
}