PT - JOURNAL ARTICLE AU - Gregg L Ruppel AU - Jeffrey M Haynes AU - David A Kaminsky TI - FEV<sub>1</sub>/FEV<sub>6</sub> May Misdiagnose Patients With COPD AID - 10.4187/respcare.04650 DP - 2016 Jul 01 TA - Respiratory Care PG - 999--1001 VI - 61 IP - 7 4099 - http://rc.rcjournal.com/content/61/7/999.2.short 4100 - http://rc.rcjournal.com/content/61/7/999.2.full