Original Research

Pulmonary function tests, sputum induction, and bronchial provocation tests: diagnostic tools in the challenge of distinguishing asthma and COPD phenotypes in clinical practice

Efrossini Dima, Nikoletta Rovina, Christina Gerassimou, et al.

International Journal of Chronic Obstructive Pulmonary Disease 2010, 5:287-296

Published Date: 2 September 2010