In patients with COPD, treatment with a combination of formoterol and ipratropium is more effective than a combination of salbutamol and ipratropium: A 3-week, randomized, double-blind, within-patient, multicenter study
2001 A.D. D'Urzo, M.C. De Salvo, A. Ramirez-Rivera, J. Almeida, L. Sichletidis, G. Rapatz, J. Kottakis, J. Almeida, S. Boucher, J. Castillo, S. Centanni, J. Cordoso, M.C. De Salvo, C.G. Di Bartolo, A. D'Urzo, A. Eivindson, D. Gorecka, C. Gratziou, J. Kottakis, J. Kozielski, G. Krammer, K.E. Langaker, S. Boucher, M.-. Lindor, R. Maleki-Yazdi, J.R. Manzano, P. Patel, A.M. Perez, P. Pfister, A. Ramirez-Rivera, G. Rapatz, K. Rimmer, N. Ringdal, M.A. Salazar, E. Barbeta Sanchez, J. Moutinho dos Santos, L. Sichletidis