Erratum to: Measuring diaphragm thickness with ultrasound in mechanically ventilated patients: feasibility, reproducibility and validity

Ultrasound measurements of diaphragm thickness (T null null null null null null null null null null null null null null null null null di) and thickening (TFdi) may be useful to monitor diaphragm activity and detect diaphragm atrophy in mechanically ventilated patients. We aimed to establish the reproducibility of measurements in ventilated patients and determine whether passive inflation by the ventilator might cause thickening apart from...