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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
Brand, P L P; Baraldi, E; Bisgaard, H; Boner, A L; Castro-Rodriguez, J A; Custovic, A; de Blic, J; de Jongste, J C; Eber, E; Everard, M L; Frey, U; Gappa, M; Garcia-Marcos, L; Grigg, J; Lenney, W; Le Souëf, P; McKenzie, S; Merkus, P J F M; Midulla, F; Paton, J Y; ... (2008). Definition, assessment and treatment of wheezing disorders in preschool children: an evidence-based approach. European respiratory journal, 32(4), pp. 1096-110. Sheffield, UK: European Respiratory Society 10.1183/09031936.00002108
