Horhota, S. T., van Noord, J. A., Verkleij, C. B., Bour, L. J., Sharma, A., Trunk, M., & Cornelissen, P. J. G. (2015). In Vitro, Pharmacokinetic, Pharmacodynamic, and Safety Comparisons of Single and Combined Administration of Tiotropium and Salmeterol in COPD Patients Using Different Dry Powder Inhalers. AAPS J.

Horhota, Stephen T., Jan A. van Noord, Cynthia B. Verkleij, Loek J. Bour, Ashish Sharma, Michael Trunk, and Piet J. G. Cornelissen. "In Vitro, Pharmacokinetic, Pharmacodynamic, and Safety Comparisons of Single and Combined Administration of Tiotropium and Salmeterol in COPD Patients Using Different Dry Powder Inhalers." AAPS J 2015.

Horhota, Stephen T., et al. "In Vitro, Pharmacokinetic, Pharmacodynamic, and Safety Comparisons of Single and Combined Administration of Tiotropium and Salmeterol in COPD Patients Using Different Dry Powder Inhalers." AAPS J 2015.