Definitions of non-response and response to biological therapy for severe asthma: a systematic review oleh Ekaterina Khaleva, Anna Rattu, Chris Brightling, Andrew Bush, Arnaud Bourdin, Apostolos Bossios, Kian Fan Chung, Rekha Chaudhuri, Courtney Coleman, Ratko Djukanovic, Sven-Erik Dahlén, Andrew Exley, Louise Fleming, Stephen J. Fowler, Atul Gupta, Eckard Hamelmann, Gerard H. Koppelman, Erik Melén, Vera Mahler, Paul Seddon, Florian Singer, Celeste Porsbjerg, Valeria Ramiconi, Franca Rusconi, Valentyna Yasinska, Graham Roberts