Cite
APA Citation
Calverley, P. M. A., Hoz, A. d. l., Xue, W., Ferguson, G. T., & Miravitlles, M. (2020). cOPD Maintenance Therapy with Tiotropium/Olodaterol Compared with Tiotropium: An Analysis in the Absence of Additional ICS Therapy. COPD, 17, 477–484. http://access.bl.uk/ark:/81055/vdc_100112016766.0x00001c