Use of a 4-week up-titration regimen of roflumilast in patients with severe COPD
Henrik Watz,1 Nitin Bagul,2 Klaus F Rabe,3,4 Stephen Rennard,5,6 Vijay KT Alagappan,7 Jonas Román,8 Axel Facius,9 Peter MA Calverley10 1Pulmonary Research Institute at LungenClinic Grosshansdorf, Airway Research Center North, German Center for Lung Research, Grosshansdorf, Germany; 2DNA Medical Ltd, Langley, UK; 3Department of Pulmonary Medi