@article{article41446a20,
title   = {Comparison of three methods for differential cell count in induced sputum},
author = {Saraiva-Romanholo, Beatriz Mangueira and Barnabé, Viviani and Carvalho, Viviani and Carvalho, Ana Lúcia I. and Martins, Milton de Arruda and Saldiva, Paulo Hilário Nascimento and Nunes, Maria do Patrocinio Tenorio},
year = {2003},
journal   = {Chest}
}