Dalal, A. A., Roberts, M. H., Petersen, H. V., Blanchette, C. M., & Mapel, D. W. (2011). Comparative cost-effectiveness of a fluticasone-propionate/salmeterol combination versus anticholinergics as initial maintenance therapy for chronic obstructive pulmonary disease. Dove Medical Press.

Dalal, Anand A., Melissa H. Roberts, Hans V. Petersen, Christopher M. Blanchette, a Douglas W. Mapel. Comparative Cost-effectiveness of a Fluticasone-propionate/salmeterol Combination Versus Anticholinergics As Initial Maintenance Therapy for Chronic Obstructive Pulmonary Disease. Dove Medical Press, 2011.

Dalal, Anand A., et al. Comparative Cost-effectiveness of a Fluticasone-propionate/salmeterol Combination Versus Anticholinergics As Initial Maintenance Therapy for Chronic Obstructive Pulmonary Disease. Dove Medical Press, 2011.