@misc{misc607d8385,
title   = {Sputum induction in asthma: comparison of two ultrasonic nebulizers},
author = {Vianna, E. O. and Mattos, F. L. and Martinez, José Antônio Baddini and Terra Filho, João},
year = {2001},
booktitle   = {International Conference of the American Thoracic Society}
}