@article{articledf853539,
title   = {Dyspnea scales in the assessment of illiterate patients with chronic obstructive pulmonary disease},
author = {Martinez, José Antônio Baddini and Straccia, Luciana and Sobrani, Elizabet and Silva, Geruza Alves and Vianna, Élcio O. and Terra Filho, João},
year = {2000},
journal   = {American Journal of Medical Sciences}
}