%0 Journal Article %T Double Lumen Tubes: Usage and Performance by Frequent and Infrequent Users %A Sachin Jha %A Jesse M. Ehrenfeld %J ISRN Anesthesiology %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/586592 %U http://dx.doi.org/10.5402/2011/586592