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APA Citation
Dusser, D., Buhl, R., Castro, M., Kerstjens, H., Paggiaro, P., Engel, M., Moroni-Zentgraf, P., Unseld, A., & Bateman, E. (n.d.). p149 Once-daily tiotropium Respimat® add-on to at least ICS in adult patients with symptomatic asthma: pooled safety analysis. Thorax, 70, A151–A152. http://access.bl.uk/ark:/81055/vdc_100135545878.0x00002b