@misc{misc566eacc4,
title   = {Cost-effectiveness comparison of three methods for differential cell count in induced sputum},
author = {Saraiva, Beatriz M. and Barnabé, Viviani and Kasahara, David I. and Carvalho, Ana Lucia I. and Martins, Mílton de Arruda and Saldiva, Paulo Hilário Nascimento and Nunes, Maria do Patrocínio Tenório},
year = {2002},
booktitle   = {E R S Annual Congress}
}