@misc{indiciae5d8e2136e3f5, title = {[Difficult asthma: what are the main obstacles?].}, author = {P Chanez}, year = {2004}, doi = {10.1016/s0761-8425(04)71262-0}, url = {https://pubmed.ncbi.nlm.nih.gov/15260063/}, note = {Source identifier: 15260063} }