Troosters, T., Weisman, I., Dobbels, F., Giardino, N., & Valluri, S. R. (2011). Assessing the Impact of Tiotropium on Lung Function and Physical Activity in GOLD Stage II COPD Patients who are Naïve to Maintenance Respiratory Therapy: A Study Protocol. Bentham Open.

Troosters, Thierry, Idelle Weisman, Fabienne Dobbels, Nicholas Giardino, و Srinivas Rao Valluri. Assessing the Impact of Tiotropium On Lung Function and Physical Activity in GOLD Stage II COPD Patients Who Are Naïve to Maintenance Respiratory Therapy: A Study Protocol. Bentham Open, 2011.

Troosters, Thierry, et al. Assessing the Impact of Tiotropium On Lung Function and Physical Activity in GOLD Stage II COPD Patients Who Are Naïve to Maintenance Respiratory Therapy: A Study Protocol. Bentham Open, 2011.