RT Journal Article SR Electronic T1 Flow Meters: What Do You Mean the Flow Rate From One Does Not Equal the Same Flow Rate From Another? JF Respiratory Care FD American Association for Respiratory Care SP 1197 OP 1198 DO 10.4187/respcare.01900 VO 57 IS 7 A1 William R Howard YR 2012 UL http://rc.rcjournal.com/content/57/7/1197.abstract AB