RT Journal Article SR Electronic T1 The ATS/ERS consensus on clinical pulmonary function testing JF Breathe JO Breathe FD European Respiratory Society SP 9 OP 10 DO 10.1183/18106838.0201.9 VO 2 IS 1 A1 V. Brusasco A1 G. Viegi YR 2005 UL http://breathe.ersjournals.com/content/2/1/9.abstract AB