有时候，继发性不孕的原因可能与第一次怀孕时产生的并发症有很关。
Sometimes, however, secondary infertility stems from complications related to prior pregnancies.
基于此原因，在FRAX系统中，只要BMD进入系统，继发性因素单元的改变并不能改变风险评分。
It is for this reason that checking the "secondary causes" box in FRAX does not alter the risk scores once BMD is entered into the algorithm.
目的探讨眼外伤后继发性青光眼的原因和治疗。
Objective To explore the cause, treatment and prevention of traumatic secondary glaucoma.
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