Early therapy improves outcomes of exacerbations of chronic obstructive pulmonary disease.
Am J Respir Crit Care Med. 2004 Jun 15;169(12):1298-303. doi: 10.1164/rccm.200310-1443OC. Epub 2004 Feb 27.
Am J Respir Crit Care Med. 2004.
PMID: 14990395