RT Journal Article SR Electronic T1 The GOLD Guidelines Definition of Mild Airway Obstruction JF Respiratory Care FD American Association for Respiratory Care SP 1397 OP 1398 VO 55 IS 10 A1 Philip H Quanjer A1 Paul L Enright A1 Gregg L Ruppel YR 2010 UL http://rc.rcjournal.com/content/55/10/1397.abstract AB