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Some risk factors for postpartum depression are well documented .

我们已经很成功的证明了一些产后抑郁症的风险因素。

This is one of the risk factors for postpartum depression .

这是患上产后抑郁症的风险因素之一。

Such postpartum centers are popping up in cities across china .

这样的产后中心在中国的各大城市如雨后春笋般出现。

Out of the 100 women , 16 developed postpartum depression symptoms .

100个孕妇中，16名出现了产后抑郁症状。

A biological marker for postpartum depression may now have been discovered as well .

我们现在也可能已经被发现了产后抑郁症的生物标志物。