TY - JOUR T1 - CORRECTION JF - Respiratory Care SP - 978 LP - 978 VL - 54 IS - 7 A2 - , Y1 - 2009/07/01 UR - http://rc.rcjournal.com/content/54/7/978.abstract N2 - In the article “Airway humidification during high-frequency percussive ventilation” by Allan PF et al (Respir Care 2009;54[3]:350–358350–358), the units of measurement for absolute humidity are in error. The correct units for absolute humidity are mg/L, not g/L. ER -