Standardisation of the measurement of lung volumes - Wanger, J; Clausen, J L; Coates, A; Pedersen, O F; Brusasco, V; Burgos, F; Casaburi, R; Crapo, R; Enright, P; van der Grinten, C P M; Gustafsson, P; Hankinson, J; et al. (The European respiratory journal, 2005)