preferred_name: Functional expiratory volume (FEV1) greater than or equal to 40% of predicted value (COPD)
preferred_name_lc: functional expiratory volume (fev1) greater than or equal to 40% of predicted value (copd)
label: Functional expiratory volume (FEV1) greater than or equal to 40% of predicted value (COPD)
label_lc: functional expiratory volume (fev1) greater than or equal to 40% of predicted value (copd)