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Ph.H. Quanjer, G.J. Tammeling, J.E. Cotes, L.M. Fabbri, H. Matthys, O.F. Pedersen, R. Peslin, J. Roca, P.J. Sterk, W.T. Ulmer, J.-C. Yernault
European Respiratory Journal 6 (Suppl 16) 85-100; DOI: 10.1183/09041950.085s1693 Published 1 March 1993