The researchers used forced expiratory volume in1 second( FEV1) and forced vital capacity( FVC) as a percentage of predicted value( FVCPP) as indicators of lung function.

• 研究者用用力第一秒呼气量(EV1)用力肺活量(vc)其预期值的百分比(vcPP)为肺功能衡量指标。