%0 Journal Article %T The need to further understand who gets hospitalized for a COPD exacerbation %A Diego J Maselli %A Antonio Anzueto %J Multidisciplinary Respiratory Medicine %D 2012 %I BioMed Central %R 10.1186/2049-6958-7-7 %U http://www.mrmjournal.com/content/7/1/7/abstract