APA

Lewis A., Torvinen S., Dekhuijzen P. N. R., Chrystyn H., Watson A. T., Blackney M. & Plich A. (20171017). 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 services research.

Chicago

Lewis A, Torvinen S, Dekhuijzen P N R, Chrystyn H, Watson A T, Blackney M and Plich A. 20171017. 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 services research.

Harvard

Lewis A., Torvinen S., Dekhuijzen P. N. R., Chrystyn H., Watson A. T., Blackney M. and Plich A. (20171017). 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 services research.

MLA

Lewis A, Torvinen S, Dekhuijzen P N R, Chrystyn H, Watson A T, Blackney M and Plich A. 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 services research. 20171017.