TY - JOUR T1 - Respiratory Problems. JF - Respiratory Care SP - 508 LP - 509 VL - 53 IS - 4 AU - Ruben D Restrepo Y1 - 2008/04/01 UR - http://rc.rcjournal.com/content/53/4/508.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -