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Barbato, A; Bertuola, F; Kuehni, C; Korppi, M; Kotecha, S; Pijnenburg, M W; Ratjen, F; Seddon, P; Bush, A (2009). Paediatrics in Berlin. European respiratory journal, 34(2), pp. 436-43. Sheffield, UK: European Respiratory Society 10.1183/09031936.00038809