Calverley P, et al. Towards a revolution in COPD health. NEJM 2007;356:775–89.
Fogarty C, Hebert J, Iqbal A, et al. QAB149 once-daily provides effective 24-h bronchodilatation in COPD patients: a 26-week evaluation vs. placebo and tiotropium [Poster]. European Respiratory Society (ERS) 2009 Annual Congress, Wien, 12. bis 16. September 2009.
Calverley PMA, et al. Roflumilast in symptomatic chronic obstructive pulmonary disease: two randomised clinical trials. Lancet 2009;374:685–94.
Fabbri LM, et al. Roflumilast in moderate-to-severe chronic obstructive pulmonary disease treated with longacting bronchodilators: two randomised clinical trials. Lancet 2009;374:695–703.