Conclusions are limited by the identification of only one trial, the methodological shortcomings of that trial, and the absence of data on accidental pregnancies.
结论有限，因为只有一个试验，此试验方法的缺点以及缺乏意外怀孕的数据。
Conclusions are limited by the identification of only one trial, the methodological shortcomings of that trial, and the absence of data on accidental pregnancies.
结论有限，因为只有一个试验，此试验方法的缺点以及缺乏意外怀孕的数据。
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