Wick B, London R
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The theoretical conversion factor for the Hirschberg test was calculated from birth to age 5. This result, 1 mm = 19.5, delta remains essentially constant from birth.
Hirschberg试验的理论转换因子是从出生到5岁计算得出的。该结果为1毫米 = 19.5,从出生起,δ基本保持恒定。