PT - JOURNAL ARTICLE AU - Oisin J O'Connell TI - Is Extended-Release Guaifenesin No Better Than a Placebo? AID - 10.4187/respcare.03319 DP - 2014 May 01 TA - Respiratory Care PG - 788--789 VI - 59 IP - 5 4099 - http://rc.rcjournal.com/content/59/5/788.short 4100 - http://rc.rcjournal.com/content/59/5/788.full