Maden, C., Maier WC, Marchand, E., Soriano, J. B., Vestbo, J., Pride, N. B., & Kiri, V. (2003). Survival in COPD patients after regular use of fluticasone propionate and salmeterol. The European Respiratory Journal, 21(3), 559-560. https://doi.org/10.1183/09031936.03.00104102 (Original work published 2003)