“Salmeterol/Fluticasone/Propionate/(50/250/µg)/Combination/Is/Superior/to/Double/Dose/Fluticasone/(500/µg)/for/the/Treatment/of/Symptomatic/Moderate/Asthma”. 2004. Swiss Medical Weekly 134 (0304): 50-58. https://doi.org/10.4414/smw.2004.10403.