Willroth P O, Zimmermann G
Z Erkr Atmungsorgane. 1984;163(3):241-4.
In 1,169 healthy subjects (821 males and 348 females) aged 15 to 70 years was determined parameter V2/V1 from the flow-volume loop for the estimation of unequal ventilation by means of the electronic spirometer Pneumotest. Reference values and prediction equations for parameter V2/V1 are reported.
在1169名年龄在15至70岁的健康受试者（821名男性和348名女性）中，使用电子肺活量计Pneumotest从流量-容积环测定参数V2/V1，以评估通气不均。报告了参数V2/V1的参考值和预测方程。
