Dreher - Figure 9

High-intensity versus low-intensity non-invasive ventilation in patients with stable hypercapnic COPD: a randomised crossover trial

References

[2]

Dreher M, Storre JH, Schmoor C, Windisch W.. High-intensity versus low-intensity non-invasive ventilation in patients with stable hypercapnic COPD: a randomized crossover trial. Thorax 2010;65:303–308.