Lewis, A., Torvinen, S., Dekhuijzen, P. N. R., Chrystyn, H., Watson, A. T., Blackney, M., & Plich, A. (2016). The economic burden of asthma and chronic obstructive pulmonary disease and the impact of poor inhalation technique with commonly prescribed dry powder inhalers in three European countries. BMC Health Serv Res.

Lewis, A., S. Torvinen, P. N. R. Dekhuijzen, H. Chrystyn, A. T. Watson, M. Blackney, và A. Plich. "The Economic Burden of Asthma and Chronic Obstructive Pulmonary Disease and the Impact of Poor Inhalation Technique With Commonly Prescribed Dry Powder Inhalers in Three European Countries." BMC Health Serv Res 2016.

Lewis, A., et al. "The Economic Burden of Asthma and Chronic Obstructive Pulmonary Disease and the Impact of Poor Inhalation Technique With Commonly Prescribed Dry Powder Inhalers in Three European Countries." BMC Health Serv Res 2016.