TY - JOUR T1 - Is Extended-Release Guaifenesin No Better Than a Placebo? JF - Respiratory Care SP - 788 LP - 789 DO - 10.4187/respcare.03319 VL - 59 IS - 5 AU - Oisin J O'Connell Y1 - 2014/05/01 UR - http://rc.rcjournal.com/content/59/5/788.abstract N2 - ER -