A comparison of fluticasone propionate, 1 mg daily, with beclomethasone dipropionate, 2 mg daily, in the treatment of severe asthma. International Study Group
NC Barnes, G Marone, GU Di Maria, S Visser, I Utama, SL Payne
European Respiratory Journal 1993 6: 877-885; DOI: 10.1183/09031936.93.06060877