TY - JOUR T1 - The authors respond JF - Respiratory Care SP - 340 LP - 341 VL - 52 IS - 3 AU - Hartmut Gehring Y1 - 2007/03/01 UR - http://rc.rcjournal.com/content/52/3/340.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -