%0 Journal Article %A Felix S F Ram %T Tiotropium mist inhaler for COPD increases risk of mortality compared with placebo %D 2011 %R 10.1136/ebm.2011.100171 %J Evidence Based Medicine %P 189-190 %V 16 %N 6 %U https://ebm.bmj.com/content/ebmed/16/6/189.full.pdf