preferred_name: Forced Expiratory Volume in 1 Second to Forced Vital Capacity in 6 Seconds
preferred_name_lc: forced expiratory volume in 1 second to forced vital capacity in 6 seconds
label: Forced Expiratory Volume in 1 Second to Forced Vital Capacity in 6 Seconds
label_lc: forced expiratory volume in 1 second to forced vital capacity in 6 seconds