Volume expired during 1.0 s of forced expiration/Volume.forced expiration.total:VFr:Pt:Respiratory system:Qn
volume expired during 1.0 s of forced expiration/volume.forced expiration.total:vfr:pt:respiratory system:qn
Volume expired during 1.0 s of forced expiration/Volume.forced expiration.total:VFr:Pt:Respiratory system:Qn
volume expired during 1.0 s of forced expiration/volume.forced expiration.total:vfr:pt:respiratory system:qn