RT Journal Article SR Electronic T1 High-Frequency External Chest Wall Compression for Secretion Clearance: Shake It, But Don't Break It JF Respiratory Care FD American Association for Respiratory Care SP 982 OP 983 VO 52 IS 8 A1 Rubin, Bruce K YR 2007 UL http://rc.rcjournal.com/content/52/8/982.abstract AB