Cite
MLA Citation
Dave Singh et al.. “Effects of tiotropium + olodaterol versus tiotropium or placebo by COPD disease severity and previous treatment history in the OTEMTO® studies.” Respiratory research, vol. 17, no. 1, 2016, pp. 1–13. http://access.bl.uk/ark:/81055/vdc_100080465067.0x000123